The Castle of the Moors was built sometime between the 8th and 9th centuries in a position 412m (1,351 ft.) above sea level. In 1147, Scandinavian crusaders besieged and captured it from its Moorish occupants. Ferdinand of Saxe-Coburg-Gotha, the royal consort responsible for Pena palace, attempted to restore the castle in the 19th century. He was relatively unsuccessful. From the parking area, a guide will send you in the right direction. From the royal tower, the view of Sintra, its palace and castle, and the Atlantic coast is stunning.