The post-Franciscan Church of the Assumption of the Blessed Virgin Mary, erected in the second half of the 14th century, is one of the most outstanding artistic and architectural achievements of sacral architecture in Poland. In the 14th century it was the highest hall church in Central Europe with the naves and aisles 26.8 metre high. The church provided inspiration for the extension of St. Johns’ Church in Toruń and St. Mary’s Church in Gdańsk in the 15th century. According to the Franciscan rule, the church does not have a tower but three rather small ave-bell towers instead. The church and the cloister remained in Franciscan hands up to the Reformation period, i.e. up to 1559. The cloister, which was the oldest and most significant in the whole of the Teutonic state, was the residence of the Prussian custos. Here during the synod of 1243 a papal bull was announced dividing the Teutonic state into four dioceses.
References:Saint-Georges de Boscherville Abbey is a former Benedictine abbey. It was founded in about 1113 by Guillaume de Tancarville on the site of an earlier establishment of secular canons and settled by monks from the Abbey of Saint-Evroul. The abbey church made of Caumont stone was erected from 1113 to 1140. The Norman builders aimed to have very well-lit naves and they did this by means of tall, large windows, initially made possible by a wooden ceiling, which prevented uplift, although this was replaced by a Gothic vault in the 13th century. The chapter room was built after the abbey church and dates from the last quarter of the 12th century.
The arrival of the Maurist monks in 1659, after the disasters of the Wars of Religion, helped to get the abbey back on a firmer spiritual, architectural and economic footing. They erected a large monastic building one wing of which fitted tightly around the chapter house (which was otherwise left as it was).