Peruse through the library or attend an evening program at the Yosemite Conservation Heritage Center, Yosemite's first public visitor center and a National Historic Landmark. The Yosemite Conservation Heritage Center, formerly known as LeConte Memorial Lodge, was built by the Sierra Club starting in 1903. The Sierra Club still operates the iconic structure as a public education and visitor center. Explore history exhibits, browse the reference library, enjoy the kids' corner, or attend an evening program. The collection includes books on the natural and human history of Yosemite and the Sierra Nevada; books by and about Yosemite luminaries like John Muir, Ansel Adams, and David Brower; children's nature literature, and Sierra Club books, magazine, and pamphlets. Free evening programs on natural history, outdoor adventure, and conservation issues are offered regularly in summer. See current Yosemite Guide or the Sierra Club website for program schedule. Operating Hours & Seasons Open Wednesday - Sunday, 10 am - 4 pm. Open seasonally from May to September. See current Yosemite Guide for hours. Accessibility This building is not wheelchair accessible. There are eight stone steps leading to the building entrance; there are no handrails. Inside, there are two steps down to access the lower area of the library.