The Mount Tamalpais & Muir Woods Railway was a scenic tourist railway operating between Mill Valley and the east peak of Mount Tamalpais in Marin County, California, covering a distance of 8.19 miles (13.18 km), with a 2.88-mile (4.63 km) spur line to the Muir Woods. The railroad was incorporated in January 1896, and closed in the summer of 1930. Originally planned as a standard gauge electric trolley line, the railroad was powered by a succession of geared steam locomotives. Billed as the "Crookedest Railroad in the World," the line was renowned for its steep and serpentine route, winding through picturesque terrain to a mountaintop tavern providing first class hospitality and striking views of the San Francisco Bay Area. Despite its popularity, the railway met its demise following a fire in 1929, and dwindling ridership when the automobile could finally drive to Tamalpais' summit.
The peaks of Mount Tamalpais loom above redwood-shaded canyons and rugged grass-covered hills of Marin. Its highest point, east peak, is 2,571-feet. During the late 19th Century, Marin County was less regarded as a source of lumber, and a place of natural beauty and respite from the densely populated areas just south across the San Francisco Bay.
Mill Valley, located at the base of Mount Tamalpais, was first planned in the late 1880s and incorporated in 1900. The city was named for a sawmill built by John Reed, to cut lumber harvested from the surrounding area. Once the area was logged, the land was divided into parcels and sold as home sites, which at first were primarily Mill Valley, California vacation residences. The city was served by The Sausalito Land and Ferry Company and the North Pacific Coast Railroad. These provided access to Mill Valley, requiring a short ferry ride across the Bay from San Francisco to Sausalito, then a transfer to the railroad for another brief trip that terminated in Mill Valley. Mount Tamalpais lies only 12 miles (19 km) directly north of San Francisco and five miles (8 km) directly east of the Pacific Ocean.