View inside the Tour de Gauzlin, named for the abbot who commissioned it, at Saint-Benoit-sur-Loire Abbey. The "porch-tower" was begun in 1020, but was probably not completed until around 1070. The lower level serves as a porch for the west entrance, while the taller upper level houses the Chapel of St. Michael (not accessible to the public). With three portals on each side, the tower is a model of the New Jerusalem as described in Revelation 21: "And it had a wall great and high, and had twelve gates... on the east three gates; on the north three gates; on the south three gates; and on the west three gates." The bottom level is open and divided into nine squares by pillars and transverse arches. The columns are decorated with narrative capitals of c.1070-80, including scenes from Revelation.