Many artists have turned to architecture to explore new possibilities for sculpture and installation art; one can trace this line back to Gordon Matta-Clark. Some of the most interesting of these artists have been those examining informal manifestations in construction and urbanism; many works have been inspired by the aesthetics of shantytowns, favelas, or slums. Here the historical predecessor is Hélio Oiticica. The third-world city, with its manifold, ungovernable flows, offers the richest and most perverse example of this sort of uncontrolled building; so it’s hardly surprising that artists