Grand-Hornu is an old industrial coal mining complex and company town (cité ouvrière) in Hornu (Boussu), near Mons, in 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.
This article about a museum in Belgium is a stub.