(See the Chevet, p. [46].)

The ambulatory with its radiating chapels is of incomparable beauty. Excepting the larger central chapel, known as the Chapel of the Holy Sacrament, which is nine-sided, each chapel has seven sides rising from a circular floor.

In each chapel, three windows similar to those of the nave, light the three hindmost walls. Blind windows imitate the true ones on the side walls.

At the base of the windows a narrow gallery, passing through the pillars, continues all along the side-aisles of the transept and nave—a peculiarity in Champagne architecture.

The 13th century stained-glass of the high windows was destroyed by the bombardment of September 19, 1914.

In April, 1917, part of the vaulting fell in on the High Altar (photo above).

The costly marble High Altar was erected in 1747 by Canon Godinot, who spent considerable sums in making alterations to the Cathedral, not all of which were happy. Its six chandeliers date from the consecration of Charles X.

The High Altar of the rear choir dates from 1764 and came from the Church of St. Nicaise. On either side of this altar are two 14th century tumulary stones. Behind is the tomb of Cardinal de Lorraine.

The small pulpit of the rear choir, the medallions of which depict the life of St. Theresa, dates from 1678. It is a gift of the widow of M. Pommery (photo below).

Twenty-two archbishops of Rheims were buried under the choir pavement. Their tombstones were removed in 1747. The present flag-stones came from the old church of St. Nicaise.