The New York Earth Room is currently closed for the summer to reopen on September 16, 2009. Walter de Maria's 1977 avant-garde work consists of 140 tons of gently sculpted soil (22 inches deep) filling 3,600 square feet of space of a second-floor gallery maintained by the Dia Art Foundation. If you like his work, check out de Maria's Broken Kilometer, a few blocks away at 393 West Broadway.