Westerlo is a municipality located in the Belgian province of Antwerp. On January 1, 2006 Westerlo had a total population of 22,896. The total area is 55.13 km˛ which gives a population density of 415 inhabitants per km˛. The abbey of Tongerlo contains a very old and fine copy of Leonardo da Vinci's Last Supper. It is also known as home of the Tongerlo abbey beer, but this is no longer brewed at the abbey.
