“Both the subject type and the particularity of the painting are unique in the Roman panorama of the Hadrianic age” when the domus was built, said Mirella Serlorenzi, director of the Caracalla site.
The inner temple features images of the Roman gods Jupiter, Juno and Minerva on one wall, and silhouettes of the Egyptian deities Isis and Anubis on other walls, evidence of the religious “syncretism” — the blending of different belief systems — that was common in Roman public monuments but not in domestic ones of the period.
“It’s the first time we find something like that in Rome, but also in the world because it’s not like there are a lot of them,” said Serlorenzi.
She noted that what experts know about Roman-era painting comes primarily from the towns of Herculaneum and Pompeii near Naples, which were destroyed and their remains preserved under layers of volcanic materials when Mt. Vesuvius erupted in 79 AD.
“So Roman painting after the 1st century AD has remained a mystery because we just haven’t had rooms so well conserved up to the ceiling,” Serlorenzi said.
The domus exhibit, entitled “Before the Baths: The House where Gods Lived Together” is now a permanent part of the Caracalla itinerary.
Archaeologist Silvia Fortunati describes to journalists the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
Archaeologist Silvia Fortunati describes to journalists the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
Journalists look at the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
Journalists look at the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
Journalists look at the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
Journalists look at the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
A detail of the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
A detail of the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
A detail of the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
A detail of the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
Archaeologist Silvia Fortunati describes to journalists the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
Archaeologist Silvia Fortunati describes to journalists the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
The frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
The frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
The frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
The frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
A detail of the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
A detail of the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
The ancient Egyptian god Osiris is part of the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
The ancient Egyptian god Osiris is part of the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
A detail of the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
A detail of the frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
The frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis
The frescoes coming from the sacellum, a small votive chapel, of a two-story home, or "Domus," dating from around 134-138 AD that was partially destroyed to make way for the construction of the Caracalla public baths, which opened in 216 AD, are on display at the Caracalla archaeological park in Rome, Thursday, June 23, 2022. The frescoed ceiling and walls of a domestic temple honoring Greco-Roman and Egyptian religious deities and believed to have belonged to a wealthy merchant family were first discovered in the mid-19th century about 10 meters (yards) underneath the current ground level of the baths, had been briefly exhibited but has been closed to the public for 30 years. (AP Photo/Domenico Stinellis)
Credit: Domenico Stinellis
Credit: Domenico Stinellis