This compact itinerary covers the two main historical landmarks of Mortrée, a quiet village in Normandy's Orne department. Begin at the neoclassical Saint-Pierre Church, a 19th-century gem with Greco-Roman inspired facade and restored interior frescoes. Continue to Château d'Ô, a 15th-century castle built on a river island with Gothic and Renaissance architecture. Note that the château opens only about 40 days per year during summer and requires advance reservation for guided tours in French.