In 1160, the construction of a fort on the hill of Tomar began. It was built high up on a hill by the Tomar River and was considered impregnable by the enemies of the West. The original castle was joined by the first cloister just two years later, and seven more were to follow. For centuries, the Temples could be sure of the favor of the Portuguese kings and continued to expand the castle. Their financial resources were almost infinite.