Berlanga de Duero - Castillo de Berlanga de Duero

In the 10th and 11th centuries there was a Muslim fortress on this site, which was expanded in the 12th century after the Castilian conquest to include the surviving outer wall.

The complex consists of the remains of the late medieval fortress (15th century), the artillery fortress (16th century), the wall surrounding the hill (12th century) and the Ducal Palace of Frías (16th century).

The castle on the edge of a deep gorge secured the communication routes on the Duero of the Kingdom of Castile.