topped by ogival arches. The west wall had two slightly larger windows (2.40 m high) below and a single much larger one (3.60 m high) in the gable. A small fragment of stone tracery found nearby may indicate that the windows in the chancel were larger and more elaborate, with two lights surmounted by a cinquefoil. Traces of abutting walls and supports for floor and roof beams in the exterior north wall of the church show that the cloister and other monastery buildings were located on that side, although no remains of these are visible today. In plan, architectural style, and construction technique the church belongs entirely to the western European Gothic tradition, without any sign of Byzantine influence, and it has been suggested that it was not merely designed but actually built by western craftsmen, if not by the monks themselves. <p> According to the 14th-century Chronicle of the Morea, the church was destroyed by fire in 1263, shortly before the battle of Prinitza, by a band of Turkish mercenaries fighting alongside Greek forces in an attempt to restore Byzantine control over the Peloponnese. Saint Nicolas The church of Notre Dame was not restored after the conflagration of 1263, but some time later a second, much smaller church, dedicated to Saint Nicolas (Ayios Nikolaos), was constructed ca. 20 m. south of the ruins of its predecessor. The church is nearly square in plan, ca. 10 m on a side. The interior was divided into a nave and two aisles by arcades supported on two pairs of piers or columns, the bases of which survive: one pair was located in the center of the church, the other at the eastern end on either side of the central apse. Three apses are visible in the well-preserved eastern wall: a larger central apse at the end of the nave (which is the only one that projects on the exterior of the building), flanked by two shallower apses at the ends of the side aisles. The windows in the two side apses are single lights topped by ogival arches; the window in the central apse, no longer preserved, was larger, with two lights. There was no narthex; three doors in the western wall provided entrance directly into the church. The roof was of wood, presumably with a clerestory over the central nave. Unlike the purely Gothic Notre Dame, the church of Saint Nicolas