The Sanctuary of Hercules Victor is one of the largest sacred complexes of Roman architecture from the Republican period (built starting from the 2nd century BC). It is a scenic structure of imposing dimensions, built on a terracing overlooking the Aniene river, along an ancient transhumance route that would later become the Via Tiburtina. The road was incorporated into the architectural ensemble as a monumental gallery (via tecta). 

The Sanctuary of Hercules Victor was composed of three main structures: the theater, which exploited the natural slope of the terrain, a large square delimited by porticoes, and the actual temple. Following the decline of the place of worship, the presence of water conduits favored the settlement of mills and foundries, in addition to the first Italian hydroelectric power plant and, finally, a paper mill. The Sanctuary of Hercules Victor represents today the most important site of dual archaeology, classical and industrial.