The Bourse de commerce (Commodities Exchange) is a building in Paris, originally used as a place to negotiate the trade of grain and other commodities, and used to provide services to businesses by the Paris Chamber of Commerce during the latter part of the 20th century. It has its origins in a circular wheat exchange built in 1763–67, with an open-air interior court that was later capped by a wooden dome replaced in 1811 with a copper one (supported by an iron skeletal structure). In a major reconstruction in 1888–89 much of the structure was replaced, although the layout remained the same and the dome was retained albeit adding glass and a mounted canvas.