A day trip from Vernon to the picturesque town of Les Andelys in Normandy. The itinerary includes Château Gaillard, Richard the Lionheart's 12th-century fortress with panoramic views of the Seine valley, two Gothic churches featuring rare organs and Renaissance stained glass, the Nicolas Poussin Museum, and the legendary Sainte-Clotilde Fountain. Important: the castle and museum are seasonal (late March to early November). Castle closed Monday-Tuesday, museum closed Tuesday. Plan for Wednesday-Sunday during the open season.