A house in Portugal covered with slate tiles.

In Portugal, in the historic center of Vila Nova de Foz Coa, is Casa Caldeira, a private house that has been reconstructed from a 19th century building. The project by architect Filipe Pina combines old elements and new additions, with the main part of the house's facade clad in slate slabs, complemented by wood cladding and laid on the original slate walls. The north and east granite walls have been restored with their historic value intact, while new openings have been created on the south, leaving some of the visible slate rubble intact.Inside the house, two levels and 270 square meters, only natural materials are used: lime plaster for the facade, wooden windows and floors, agglomerated cork insulation for the floors and slate for the facade cladding.

The meeting and conversation areas are located on the first floor, in a space formed only by the existing stone walls. On the second floor, the rooms are organized according to the principle of symmetry and rotation, creating a large space in the center, overlooking the natural landscape of the region.