The monastery of Saint John of the Rock is in the proximities of the Kingdom of the Mallos.

The old monastery, birthplace of the kingdom of Aragón, is excavated on alive rock and it was founded on century IX by the Benedictine ones. The plant of the Monastery, by its antiquity and extraordinary lodging next to the mountain, is unique.

It has two levels: The ground floor and the high floor. The ground floor is partially underground and it was constructed in the days of the king Sancho Garcés, around the year 922. In this floor we found a mozarabic church that conserves some romanesque freshes and the room of the Concilios.

The superior plant contains the pantheon of the noble (centuries XI to the XIV) and the high church which has a nave, that finishes in three apses.

The rock serves as tile roof of the nave. In the North wall we found the real pantheon in which the kings of Aragón and Navarre during five hundred years were buried. After crossing a mozarabic door you enter in a precious Romanesque cloister of the century XII.

At the end of the century XVII and beginnings of the century XVIII the high monastery of Saint John of the Rock was constructed, next to the meadow of Saint Indalecio.