Tower of Alvaux

Alvaux Tower, also known as Tour d'Alvaux or Alvau or also called Saracen tower, is a plain residential tower of the late 12th century located in Nil-Saint-Vincent-Saint-Martin, a village in the Belgian town of Walhain, the province of Walloon Brabant.

The tower stands in the village of Nil-Saint-Vincent, near Mont-Saint-Guibert south of the city of Brussels in Belgium.^[1] Alvaux Tower is a tower house built between 1183 and 1217 by Arnould II de Walhain. The land was yielded to him by Bertha, the abbess of Nivelles, in 1199.^[2] The tower was attached to Walhain Castle and had connections with the nearby Griffon du Bois Tower.

When it was built it was surrounded by ditches and equipped with a drawbridge. On top there would have been a pyramidal roof. With this roof the tower would have been some 20 meters high.

Today the tower is situated on a camping ground with access to the tower prohibited and to side the site is surrounded by marshland surrounded by two small arm of the river Orneau.