CASTLES OF SPAIN - Castillo de Ponferrada, (Templar Castle) Leon, Spain. The Templars began to build the castle of Ponferrada, in León, in 1178. The monks of the order rebuilt a small Roman fortress that had been destroyed by the Goths. Later they covered the original rampart with lime and pebbles. By 1282 the small fort served as a protection for pilgrims on their way to Santiago.