Knolls Atomic Power Lab Windsor Site, Connecticut

Though only abandoned parking lots and building slabs remain visible today, this used to be a major nuclear training site for Knolls Labs. From 1957 until 1993, the Department of Energy operated a full-scale nuclear reactor prototype for testing and training of Navy personnel here, part of an industrial complex located along the Farmington River, in Windsor. The site was dismantled from 1995 to 2001, followed by environmental remediation which was completed in 2006, though some of the plant is buried in mounds, still off limits to the public. The Farmington River runs past the site, and drains into the Connecticut River next to the lacrosse fields at the Loomis Chaffee Preparatory School.