Nestled in a 640-acre nature area of Duluth, Minnesota, the Hartley Nature Center serves as the headquarters for outdoor programming and provides a meeting site for naturalists, environmental organizations and community events. The building showcases energy efficiency and earth-friendly design and construction.
The facility features clerestory windows on the roof to bring in natural light and provide ventilation. Roof-mounted solar panels harvest energy for electricity. Passive solar power and a geothermal heat pump provide efficient heating and cooling systems. Construction emphasized the use of recycled/recyclable materials and wood certified as harvested by environmentally-sensitive practices. TKDA completed the project before LEED-based sustainable industry practices were widely standardized.