Six years into a decade-long restoration effort, Italian authorities partially reopened Rome's magnificent Domus Aurea (House of Gold) on Sunday, Reuters reports. The 300-room structure, now mostly underground, was built by Emperor Nero after fires decimated much of Rome in 64 AD. It takes its name from the gold leaf that once covered many of its walls.

The site was initially opened to visitors in 1999. However, structural issues forced it to be closed to the public in 2005. It briefly reopened in 2007 but was then closed again after several cave-ins were reported. Visitors will now be able to enter the site on the weekends.