--> 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 Castro Marim Castle Detail Marvão Castle view Penela Tomar Castle Loulé Castle View from the Ramparts - Lisbon Castle