Tancas Abertas

The church, in Romanesque style and with a single-nave plan, has an apse oriented to the northeast and a bell-cote, probably not in its original position.

The facade, characterized by bare surfaces and sturdy corner pilasters, is made of red trachyte.

The portal, lintelled, with a relieving arch raised by a stone, opens onto the facade, while a similar portal is present on the eastern side.

The sides of the church are lit by two single-light windows with a double opening, similar to the single-light window of the apse.