Also known as the World's Fair, the last Expo was held in Zaragosa Spain in 2008 and the next two are to be in Yeosu, South Korea in 2012 and Milan, Italy 2015. The first World's Fair was held in 1851 in The Crystal Palace, Hyde Park, London and was the brainchild of Prince Albert (Queen Victoria's husband). The Crystal Palace was hailed as an architectural innovation being the first building ever constructed completely of cast iron and glass, designed by Joseph Paxton (who was knighted by the Queen for this masterpiece). Other buildings that have been built for the World's Fair are the Eiffel Tower for Paris Expo 1889 and the Habitat for Montreal 1967. Therefore, this Expo 2010 is part of a historically significant event.