In Caen, to the east of Place St-Pierre, at the end of Rue des Chanoines, is the Place de la Reine-Mathilde, in which is the magnificent Romanesque abbey church of La Trinité or of the Abbaye-aux-Dames, built by William the Conqueror''s wife Matilda.In the impressive interior is the queen''s tomb, and beneath this is a crypt.