Loomis Museum.

Located at the Manzanita Lake entrance of Lassen Volcanic National Park, the Loomis Museum serves as a sturdy, stone-clad introduction to the region’s volatile geological history. Built in 1927 by homesteader and photographer Benjamin Loomis, the structure is crafted from local volcanic rock and features a distinctive green-tiled roof with stepped parapets. Inside, the original 1914–1915 eruption of Lassen Peak is chronicled through Loomis's own historic photographs, alongside traditional Native American basketry and geological displays. The site feels like a time capsule of early 20th-century preservation, complete with an adjacent 1926 seismograph hut where visitors can peer through windows at vintage monitoring equipment. It’s a functional, rustic landmark that bridges the gap between the park’s fiery past and its current role as a protected wilderness.