The Norris, Madison, and Fishing Bridge Museums in Yellowstone National Park are three surviving trailside museums built in 1929 and recognized together as a National Historic Landmark in 1987. Designed by Herbert Maier, they are notable early examples of National Park Service Rustic architecture, using rubble stone, shingles, gabled roofs, flagstone, and peeled log supports to blend with the landscape. Their design became influential in park construction during the 1930s, helping shape museum and visitor facilities in national and state parks. Along with Maier’s related work elsewhere, these museums helped establish a lasting architectural identity for the American park system.