A gallery aesthetic first formed in the early 20th century in response to the perceived need to devise a suitable space for the display of modern, abstract art. Essentially it consists of a square or oblong space, painted white and with a light source usually from the ceiling. The white walls are considered a suitable surround for works that are often unframed. More recently, in 1993 the gallerist Jay Jopling opened the first of his eponymous White Cube galleries in London where he has exhibited many leading contemporary British artists including the YBA (Young British Artists).
http://www.whitecube.com/ White Cube website.