Vernon is a commune in the department of Eure in the Normandy region in northern France. It lies on the banks of the Seine River, about midway between Paris and Rouen.

The Notre Dame Church Collegiate is considered one of the most beautiful examples of medieval architecture in France. Built between the 11th and 16th century, the collegiate contains different architectural styles. Where the altar and the transept are Romanesque style, the rest of the building was rebuilt in three different Gothic (namely Early, Flamboyant and Perpendicular Gothic) styles. The organs date back to the beginning of the 17th century and which was restored in 1979. Some magnificent abstract-style stained glass windows were inserted in the 1970’s to replace those destroyed during World War II.