The middle of the 19th century saw The Great Exhibition of 1851, the first World's Fair, which showcased the greatest innovations of the century. At its centre was the Crystal Palace, a modular glass and iron structure – the first of its kind. It was condemned by Ruskin as the very model of mechanical dehumanisation in design but later came to be presented as the prototype of Modern architecture. The emergence of photography, showcased at the Great Exhibition, resulted in significant changes in Victorian art with Queen Victoria being the first British monarch to be photographed.