Photographed, then subsequently thrown away, by Alfred Stieglitz, urinated on by Brian Eno and sometimes cited as the work of a Bauhaus baroness rather than the man it is most commonly associated with, Marcel Duchamp’s Fountain is arguably the first piece of conceptual art ever, certainly the most famous ready made in art history, and has inspired countless artists from Grayson Perry to Damien Hirst, Richard Hamilton to Richard Wentworth and inspired many others to ‘interact’ with it in the most obvious way in gallery and museum settings…