It was the feud to end all museum feuds. Christoph Büchel, the Swiss artist, left North Adams in December 2006, never to return. By the spring, more than 150 tons of material for his unfinished football field-size installation remained in the Massachusetts Museum of Contemporary Art's Building 5, with no hope of an opening. The museum sued. Art critics railed. And quietly, Mass MoCA removed all that stuff and opened its Jenny Holzer exhibit.

Audio slideshow: What went wrong between Christoph Büchel and Mass MoCA