Spoleto became a Roman colony in the 3rd century BC, but the best excavated remains date from the 1st century AD. Best preserved among them is the Casa Romana. According to an inscription, it belonged to Vespasia Polla, the mother of Emperor Vespasian (one of the builders of the Colosseum and perhaps better known by the Romans for taxing them to install public toilets, later called "Vespasians"). The rooms, arranged around a large central atrium built over an impluvium (rain cistern), are decorated with black-and-white geometric mosaics.
Palazzo del Municipio, Via Visiale 9, Spoleto, Umbria, 06049, Italy