The prehistoric pile-dwelling sites of the Frassino and Belvedere Alpine arch are part of the UNESCO World Heritage.
The pile-dwelling settlements are buried in the peaty deposits of ancient ponds or river courses, or submerged in bodies of water. The alpine stilt houses have allowed specialists to reconstruct, like in no other region of the world, life in farming and pastoral societies between the 5th and 1st millennium BC. Along the alpine arc, there are about 1000 sites with "stilt" structures. They are distributed across six European countries. They are mostly located near the shores of lakes, in peat bog areas, and, more rarely, along rivers. Thanks to their position in water-saturated soils, the wooden structural elements, food remains, wooden tools, and even textiles have been preserved. For this reason, the remains of these settlements provide a glimpse into life of the time: they represent indeed the most important source for the study of the earliest European farming societies. Of the 111 pile-dwelling villages, 19 are located in Italy, 4 of which are in Veneto: Peschiera del Garda - Belvedere, Peschiera del Garda - Frassino, Cerea - Tombola, and Arquà Petrarca - Laghetto della Costa.