The Longmire Historic District comprises the former headquarters district of the park and its chief developed area. The district includes 58 contributing buildings and structures, including four structures individually listed on the National Register of Historic Places. It is home to the largest concentration of National Park Service Rustic–style structures in the park, and one of the most notable groups of such structures in any U.S. national park. The district lies on either side of the Paradise-Nisqually Road, with the Longmire Meadows area on the north side and the park concession and administration facilities on the south side of the road.