In St. Venanzo Territory, the hamlet of Rotecastello (about 22 residents) has a striking medieval character, though its origin probably dates back to Etruscan times (an Etruscan tablet is visible on one of the houses in the hamlet). The village, rising on a hill 360 metres above sea level, surrounded by Calvana stream, has very interesting artistic and naturalistic features: among these, the recently restored tower dating from 13th century, and the Church of "Our Lady of the Snow", with its beautiful renaissance fresco. What strikes most, though, is the substantially intact urban setting, enhanced by the absence of new buildings.

Despite its name (Rota Castellum, wheel-shaped castle) the hamlet has a lance-point shape, with the tower at the eastern tip. The village is surrounded by walls, the visit of which is a very charming walk, among oaks and prune trees.