The Adam Joseph Lewis Center for Environmental Studies, located on the campus of Oberlin College, is one of the most advanced examples of Green building in the United States. Construction crews completed work on the building in January 2000. The following semester, classes in conservation biology, environment and society, sustainable agriculture, ecological design, environmental education, physical geology, and solar energy were held in the center. It would have qualified as a LEED Platinum building had it not been built before the LEED system was established. John T. Lyle who was the lead designer for the Lyle Center for Regenerative Studies was also the landscape architect for the project, the main plaza is named in his honor.