The Nativity façade and Crypt of the Basilica of the Sagrada Familia have been declared UNESCO World Heritage Sites, together with another six works by Antoni Gaudí. It contains the tomb of the famous architect.
This is an underground level located beneath the apse. It is covered by a large vault in which, at the point where the largest arches meet, there is an outstanding sculpted polychrome image of the Annunciation to Mary.
It also has a central altar with an altarpiece by the sculptor Josep Llimona, and four chapels dedicated to the Virgin of El Carmen (the site of Gaudí's tomb), Christ, the Virgin of Montserrat, and Christ on the cross (the site of the tomb of Josep María Bocabella, who was responsible for the idea of building La Sagrada Familia). The floor of the crypt is bordered by a Roman mosaic with images of wheat and vines.
Admission is restricted, as it is only open during hours of worship.