Abbey of Saint-Gilles

In its center is the tomb of St. Giles, a medieval place of veneration until in the 16th century, his relics were moved to the Basilica of Saint Sernin at Toulouse.

The upper church, with a nave and two apses, mostly belongs to the 17th-century reconstruction, aside from the massive pillars in Corinthian style.

Behind the apse are the remains of the ancient choir, which once were part of the originally longer church (98 meters instead of the current 50).

Inside the northern wall of the ancient choir is a spiral staircase (now free standing) known as "Screw of St. Gilles", dating to the 12th century, made of cantilevered stone steps.

A plaster cast of the façade exists in the Hall of Architecture at the Carnegie Museum in Pittsburgh, Pennsylvania.