Waldo Mountain Fire Lookout stands on the summit of Waldo Mountain in Oregon’s Willamette National Forest, where it was built to provide broad views over the surrounding forest. A lookout was first established there in 1926 as a small cabin, replaced in 1929 by a cupola-style structure, and succeeded by the present flat-top building in 1956. Although no longer staffed or used as an active fire lookout, the site remains notable as a hiking destination. It is included in William Sullivan’s 100 Hikes in the Central Oregon Cascades as hike number 90, a difficult 7.9-mile loop with about 2,000 feet of elevation gain.