A new monograph, written by Martin Herbert and published by Thames & Hudson, lists 15 unrealized projects, including a colossal and lurid balloon of a human heart that was to hover
over the Kent town of Folkestone to commemorate the 17th - century physician William Harvey, a life - size
biblical ark to perch atop a mountain in northern Britain, and a proposal to the Aspen Art Museum to scatter 822,000 coins (worth $ 15,000) into Colorado's Roaring Fork River, in
reference to Aspen's wealth and mining history.