Rome's Baths of Trajan, an ancient bathing and leisure complex featuring giant frescoes and mosaics, is opening to visitors for the first time, the city's mayor said on Tuesday.
Inaugurated in 109 AD, the baths were built by the most famous architect of the time -- Apollodorus of Damascus -- and covered an area of 60,000 square meters (646,000 square feet).
The remains are located on top of the Colle Oppio near the Colosseum and the Roman Forum.
Visitors will be able to see a fresco entitled "The Painted City", depicting an unidentified city of the Roman Empire, as well as a large mosaic dubbed "The Muse and the Philosopher", whose colors are still vivid and whose figures are rendered with striking realism.
"These are the largest fresco and the largest mosaic of the Roman era ever discovered," mayor Roberto Gualtieri told reporters as he announced the site would open this weekend.
He called them "marvelous works that are truly unique in the world for their artistic beauty and their historical... significance".
The site also includes an exedra, a semicircular building whose precise purpose is unknown, which will in future host artistic and cultural events.
The area, which is still undergoing restoration, will initially open only at weekends for groups of no more than 15 people during September.