The theater is located on the slopes of Mount St. Cross. The first plant of the building is not later than the first Augustan age: it was built with a staircase leaning against the slope of the mountain and included the ima and the media cavea, the lower parts of the staircase, separated by a semicircular passage; the scene, not yet completely brought to light, had to be rectilinear while, as a crowning, had to have a portico. The structure is in opus reticulatum with heads of the walls and ferrules of the arches in limestone blocks, according to a late-republican tradition; the architectural decoration, partly recovered, was in white marble; the walls were frescoed or covered with polychrome marble. Over time, the theater was the subject of several interventions: at a later time of the first century AD, should be attributed to an expansion, with the construction of the summa cavea, the highest part of the steps, supported by a robust system of substructures that also had the purpose of containing the land behind the theater. The technique used is the same as the reticulated work, but with elements of limestone and tuff alternating to form simple decorative motifs.

Inside the lovely Palazzo Caputi, in Ruvo di Puglia, visitors will find the Book Museum and House of Culture, which hosts a very large collection of volumes, making it one of the cornerstones of local culture.