Bruxelles - Brussel
Unfortunately the postcard also did not include the name of the artist. The Grote Markt (Dutch) or Grand Place (French) is the central market square of Brussels. It is surrounded by guild houses, the city's Town Hall and the Bread House (Dutch: Broodhuis, French: Maison du Roi).
The Grand Place was named by UNESCO as a World Heritage Site in 1998.
Grand Place Wikipedia Entry