Due to its excellent architectural heritage, it was declared a Historic-Artistic Site in 1965. The streets of Sigüenza are full of civil and religious buildings of great beauty. The castle is currently Parador de Turismo. Important remains of the walls are preserved, whose doors and towers start from the castle. The cathedral, begun in 1130, is Romanesque, although it was later developed following the canons of the Gothic. Its exterior appearance is that of a medieval fortress with Romanesque towers and portico and an impressive rose window. It lodges in its interior the tomb of Martín Vázquez de Arce, known like El Doncel de Sigüenza. In the Plaza Mayor or market, Renaissance …