The New York Times recently did a story on the cyclorama in Atlanta. There are a bunch of cylcoramas still left around the world, but the Atlanta one is huge (the largest oil painting in the world).
http://www.nytimes.com/2011/10/09/us/moving-of-atlanta-cyclorama-is-raised.ht…
http://www.atlantacyclorama.org/
This brought back one of the great events in U.S. racquet sports history, the finals of the 1984 Boston Open, Jahangir Khan v. Mark Talbott, 18-16 in the fifth. It was played in the cyclorama in the South End that is now a part of the Boston Center for the Arts. Hard to believe but it has been almost exactly twenty-seven years since the U.S. started putting on portable glass court squash tournaments.