The original monastery was raised in the 11th century as a part of group of buildings, standing as a landmark for the pilgrims taking up the route of the Way of Saint James just before the entrance to the old city across the Arco de San Juan.
The new addition and integration to the ruins of the church of the Monastery of San Juan is intended to protect the architectural remains of the temple and at the same time to create a new protected space to celebrate cultural activities regardless of whatever weather conditions. The new roof takes the shape of a large folded plane of wood louvers. Blending the contemporary vision with respect for the remains of the church, seems to "float" above the ruin as an independent structure keeping the perception of architectural remains unlaltered.
Furthermore, the roof planes are based on a steel structure permanently hidden as the outside is coated with a matte translucent finish laminated glass and the inside is coated with a suspended ceiling made of wooden slats.