Fort Paso, also known as Fort Montedor, is located on the shore of Paso a few meters from the sea, and is one of four fortifications built towards the end of the War of Restoration in the 17th century on the coast between Caminha and Viana do Castelo with the aim of strengthening the defense of the Atlantic coast of Alto Minho It played an important role during the invasions of Napoleon, and is characterized by an architectural structure with a star shape in the style of the approach.