Standing on a granite outcrop 18 m above sea level, on a small island 310 m long by 75 m wide, in the middle course of the river Tagus, a little below its confluence with the river Zêzere, at the time of the Reconquest Was part of the so-called Tagus Line, now the Templar Tourism Region.
It is one of the most representative examples of the military architecture of the time, evoking simultaneously the beginnings of the kingdom of Portugal and the Order of the Templars, an association that reinforces the aura of mystery and romanticism.
