El Castellet of Folgueroles Monument · Folgueroles, Osona, Barcelona Image of Folgueroles, not of the place itself. An Iberian site on a hill near Folgueroles (Osona), declared Bien Cultural de Interés Nacional (Catalonia's highest level of heritage protection). It consists of a 65-metre-long wall with a rectangular tower measuring 6.3 by 13 metres, which protected ten domestic rooms of about 5 by 6.5 metres, separated by walls 1.3 metres thick and built of stone slabs and local sandstone blocks, with light roofs of branches and mud. Its chronology, around the 3rd century BC, was confirmed by the discovery of Emporitan drachmas, silver coins minted at Empúries, and black-glaze pottery from the workshops of Roses. Excavated since 1960 by the Episcopal Museum of Vic, a small ironworking workshop was documented in one of its areas, and in front of several rooms there was a paved courtyard for communal use. Photo: Medol (CC BY-SA 4.0) What to see and do in Folgueroles