The Louvre is probably the most famous of all art galleries in the world - whilst the Guggenheim is the most widespread. Between them they house some of the finest art from Ancient Egypt to the present day.
The Louvre, in Paris, was originally a fortress, built in the 12th century. It was converted into a royal residence 400 years later and was decorated with many great artworks such as The Mona Lisa.
Following the French Revolution the Louvre became a museum, opening its doors in 1793. Over the following centuries its collection has grown, helped in part by the conquests of Napoleon.
Because of their outstanding design, many of Gehry's buildings have become tourist attractions, including his own home!