CASON DEL BUEN RETIRO MADRID

 This is the only reminder of the grandeur that was once the Buen Retiro Palace, built for Philip IV in the 17th century. Cason usually means 'big house', but a century ago it was used as a pejorative term to describe the dilapidated structure. When this part of the Prado art complex reopens, it will house 19th century art.