Ancient Rome may have been much larger than originally believed, according to recent archaeological findings.

In an excavation area on Quirinal Hill, researchers have discovered a well-preserved rectangular residence they say dates back to the 6th century BC, complete with wooden beams, clay-covered walls and a roof, and what archaeologists say are clues that prove it was used for domestic purposes.

The hill was previously believed to have been used as a sacred area, with temples and a necropolis, while the city’s residential part was thought to be further south where the Roman Forum is located. Today, the Quirinal Hill is home to the Italian president’s official residence.

“From the materials used we can deduce that it’s an important dwelling dating back to 6th century BC, a truly archaic period, very rare in Rome,” says Francesco Prosperetti, superintendent for Rome’s Archaeological Heritage, who says the finding is considered to be among the most important of the last 10 yea