Château de la Forêt – The Castle Moulbaix. Abandoned Castle in Belgium. Also known as Château de Chasteleer, was built by architect Desire Athois Limburg. The abandoned castle has 344 windows and is surrounded by 62 acres of land. It now belongs to the children of the Count d’Ursel Aymard. The descendants cannot decided on a single owner and the castle has begun to fall into decay.