At 33 feet wide and 52.5 feet high, a mosaic newly unveiled inside the Museum of the Baths of Trajan may be the largest surviving anywhere in the Roman world. The museum preserves a monumental early 2nd-century bath complex covering roughly 15 acres on Rome’s Oppian Hill, built partly from the repurposed remains of Nero’s Domus Aurea. Archaeologists are still unsure whether the mosaic originated in that Golden House or in a lavish dwelling later absorbed into the compound.
