Venlo (vĕnˈlō) [key], city (1994 pop. 65,367), Limburg prov., SE Netherlands, on the Maas (Meuse) River, near the German border. It is a trade center for fruit and vegetables. Manufactures include lumber and chemicals. Venlo was formerly a fortress city; it frequently changed hands during the wars of the 16th, 17th, and 18th cent. Noteworthy buildings include a 15th-century Gothic church and the 16th-century town hall.