Vexin

Map of France showing the general location of the historical county of Vexin
Map of France in 1180. Vexin is visible between Paris and Rouen.
Map of Norman Vexin.

Vexin (French pronunciation: [vɛksɛ̃]) is a historical county of northern France. It covers a verdant plateau on the right bank (north) of the Seine running roughly east to west between Pontoise and Romilly-sur-Andelle (about 20 km from Rouen), and north to south between Auneuil and the Seine near Vernon. The plateau is crossed by the Epte and the Andelle river valleys.