Largest known Roman mosaic, beneath Baths of Trajan, opens to the public
The largest Roman mosaic ever discovered has opened to the public beneath the Baths of Trajan in Rome. The site features a first-century fresco and a massive wall mosaic depicting an ancient city.
Why it matters
This discovery provides significant new insights into Roman urban planning and artistic history, offering a rare look at preserved imperial-era architecture.
news Largest Roman mosaic opens to the public The first-century mosaic and accompanying fresco located beneath the Baths of Trajan in Rome welcomed its first visitors this past weekend Gareth Harris 14 September 2026 Share Archaeologists are unsure whether the mosaic depicts a real or imagined city
A vast mosaic uncovered in Rome, the largest ever discovered in the Roman world, has opened to the public for the first time. The mosaic and an accompanying fresco were discovered during excavations in the 1990s in an underground gallery beneath the Baths of Trajan, an expansive imperial leisure complex comprising libraries and bathing pools.
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