Due to the rural exodus, San Felices de los Gallegos now only has around 400 inhabitants. After the reconquest (reconquista) from the Moors and the repopulation (repoblación) of the almost deserted mountain region in the 11th and 12th centuries, the area was disputed for centuries between the Kingdom of Portugal and the Kingdom of León (later the Kingdom of Castile).
The Castillo amd the city walls are remnants of the disputes between the kingdoms over control of the area. Built in the 13th century by the Portuguese king Don Dinis, this gate still exists.

And one of the many labourers who created the city walls found the time to carve these two stones and to wall them in at the top of the gate