Broken Angel House: Nine Story Mutant Artwork (Gone)
Brooklyn, New York
Since 1972, Brooklyn artist Arthur Wood has been turning his home -- purchased as a derelict for $2,000 -- into a work of art. He keeps adding new rooms, architectural gew-gaws, and floors; at least five new floors thus far. This modern version of the Winchester Mystery House now stands over 100 feet tall, befuddling the neighbors, delighting the trendwatchers, and ticking-off the city.
UPDATE: A mysterious fire in October 2006 gutted the House and triggered a deluge of code violations. Wood was eventually forced to knock off the five upper floors and sell what remained to an evil condo developer.