Grand-Hornu is an old industrial mining complex in Hornu in the municipality of Boussu, Belgium. It was built by Henri De Gorge between 1810 and 1830. It is a unique example of functional town-planning. Today it is owned by the province of Hainaut, which houses temporary exhibitions in the buildings. As one of four Major Mining Sites of Wallonia, UNESCO designated it a World Heritage Site in 2012. – Wikipedia