A red fishing shack at the end of a granite wharf in Rockport is an unlikely celebrity. The picturesque old building, known as Motif No. 1, is reputed to be the most painted building in the United States -- if not the world. It has also appeared in movies, as an award-winning float, on magazine covers, on a postage stamp, in a 1960s Winston cigarette ad and as a Kentucky bourbon bottle. Rockport's boosters shamelessly promote Motif No. 1 as a tourist attraction.