Rome archaeologists reveal largest Roman wall mosaic ever found

Archaeologists in Rome have unveiled what is believed to be the largest Roman wall mosaic ever discovered. Measuring 10 meters in height and 16 meters in length, the work has been dubbed the ‘Great Mosaic’.

Located in an underground gallery within the Trajan's Baths on the Colle Oppio, near the Colosseum, the discovery follows a 14-year restoration project. The mosaic features intricate depictions of centaurs, poets, muses, and ornate columns. At its base, a detailed scene portrays a walled port city with towers and public squares, which researchers suggest could represent a real location like Ostia or an imaginary setting.

Experts are still determining whether the mosaic was part of the ‘Domus Aurea’—the palace built by Emperor Nero—or an independent private residence that was later incorporated into the complex. The site was eventually transformed into public baths by Emperor Trajan in 109 AD. Archaeologist Francesco Pacetti noted that excavations are ongoing to determine the full extent of the find.