The Eure River, which at this point divides into three branches, is crossed by several bridges, some of them ancient, and is fringed in places by remains of the old fortifications, of which the "Porte Guillaume" (14th century), a gateway flanked by towers, was the most complete specimen, until destroyed by the retreating German army in the night of 15 to 16 August 1944. The steep, narrow streets of the old town contrast with the wide, shady boulevards which encircle it and separate it from the suburbs. The "parc André-Gagnon" or "Clos St. Jean", a pleasant park, lies to the north-west, and squares and open spaces are numerous.