13th century Alenquer Castle near Santarem. Alenquer is perhaps best known as the town from which the explorer Vasco da Gama came photo: Jose Manuel Posted by Travel in Portugal on Sat, 21/12/2013 - 21:18 × Related images Silves Castle Carcovelos Beach and Sao Juliao Fort Tree and Turret at Moorish Castle - Sintra Sintra from the Castle Moors Castle - Sintra Soure Castle