Castellfollit de la Roca is one of the most picturesque villages in the autonomous community of Catalonia, in Spain. The village is situated on a narrow strip of basalt rock, barely two houses wide at places, that rises to a height of 50 meters and stretches for a kilometer. This small urban area is bordered by the confluence of the Fluvià and Toronell rivers, between which the town's spectacular basalt cliff rises. With an area of less than 1 square km, Castellfollit de la Roca is one of the smallest villages in Spain. The sight of the church and the houses high on the edge of the basalt precipice has become one of the most photographed and the most popular image of this region.

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