The modern town of Avenches lies on part of the former capital. Across the whole are the several Roman structures - two roman temples, an amphitheatre, an open air theatre, several sections of the wall surrounding the town, bath house and the eastern gate.
The theatre was built in the early 2nd century in an area once occupied by scattered houses. It has been rebuilt and renovated many times throughout its time. In the last third of the 3rd century it was rebuilt as a fortified refuge with a mound added. It stayed in use until the middle of the 4th century. The whole theatre remains in good condition today.