Groesbeek is a town and former municipality in the province of Gelderland, the Netherlands. In January 2015 the former municipality merged wit…Groesbeek is a town and former municipality in the province of Gelderland, the Netherlands. In January 2015 the former municipality merged with Millingen aan de Rijn and Ubbergen. The larger area was known as Groesbeek until January 2016, when its name was changed to Berg en Dal.