Leaving this interesting spot and passing through Rue Tardieu, we reach Place St-Pierre, formerly known as Place Piemontési, and go on through Rue Foyatier to the ancient Rue St-Eleuthère, once in part of its length Rue du Pressoire, a name recalling the abbey winepress on the site of the reservoir we see there now. Thus we come to Rue Mont-Cenis, the ancient Chaussée St-Denis, and in part of its course, Rue de la Procession, referring to the religious processions of those bygone days. And here we see before us the most ancient of Paris churches, St-Pierre de Montmartre. It dates from the first years of the ninth century, built on the site of an earlier chapel or several successive chapels, the first one erected over the ruins of a pagan temple. Four black marble pillars from the ruins of that temple were used for the Christian church: we see them there to-day, two at the west door, two in the chancel. We see there, too, ancient tombstones, one that of Adelaide de Savoie, foundress of the abbey, for the Choir des Dames was the abbey chapel, and there the abbesses were buried. The old church was threatened with destruction after the desecration of 1871, when it was used as a munition _dépôt_. Happily it has been saved and in recent years restored. The façade is eighteenth-century work, quite uninteresting as we see, but the view of the east end from without, the apse, the old tower and the simply severe Gothic interior, are strikingly characteristic. The cross we see in front of the church was brought here from an old cemetery near. The garden adjoining, with the Calvaire set up there in 1833, was in ancient days the nun’s graveyard. The cemetery on the northern side dates from the time of the Merovingian kings. [Illustration: ST-PIERRE DE MONTMARTRE]