The first organized excavations of Valeria ran from 1951 to 1974, and its first museum opened in 1952. The nearby villagers involved themselves in the project, putting an end to the looting of the site. Since the mid-1970s, archaeological work continued in the forum, basilica, and adjacent buildings. The last structures to be uncovered were the taverns near the nymphaeum, the cave dwelling known as the Hanging House, and the cryptoporticus. Two good examples of private homes were also excavated: the Pit House and the Adobe House.
The Roman city had a good water supply through a system of aqueducts. Some of them, carved into the rock, are still visible.