The Tower Building is a Class A speculative office building in suburban Rockville, Maryland, ten miles (16 kilometers) northwest of Washington, D.C., along the I-270 high-tech corridor. Completed in 2001 and designed before the release of U.S. Green Building Council Leadership in Energy and Environmental Design (LEED) standards for commercial projects, the ten-story, 276,000-square-foot (25,640-square-meter) Tower Building demonstrates environmental innovations in the speculative office sector.