Trevignano Romano is a municipality in the metropolitan city of Rome Capital, located between the northern coast of Lake Bracciano and the slopes of Monte di Rocca Romana. Its territory falls within the regional natural park of Bracciano-Martignano. In Trevignano, the first pre-urban structures for which there is archaeological evidence date back to the Final Bronze Age and are located on Monte Rocca Romana and, above all, on Monte Calvi. Trevignano was an important Etruscan settlement. The heart of Trevignano Romano is the Orsini Castle or Rocca dei Vico, built in the thirteenth century by order of Pope Innocent III. The Roman Etruscan Civic Museum “Prof. Gregorio Bianchini” is welcomed inside the town hall; here the very rich grave goods of two tombs from the Olivetello necropolis are preserved: the Annesi Piacentini tomb and the Flabelli tomb discovered in the 1960s.