Portugal's castles are closely related to the Order of the Temple and to the creation of Portugal as an independent territory from the Muslim and Spanish kingdoms. The fortresses reveal an Arab influence dating back centuries combined with the Templar presence and Portuguese flair that made these constructions seemingly impregnable. Portugal became the last stronghold of the Knights Templar, whose mysticism and introversion gave birth to mysterious legends in the castles included in this episode: Dos Mouros, San Jorge, Evoramonte, Tomar, Almourol, Marvao, Montemor O' Velho, Braganca, Guimaraes and a special tour of the palaces of Sintras.