The Bayshore Roundhouse
Built in 1910, Bayshore's brick roundhouse was used to park and service locomotives on their way into SF. As the Southern Pacific line grew, so did the Bayshore facilities -- at one point there were 25 outbound tracks, 39 inbound tracks, and even a hospital for the 3,000 employees. The rise of diesel engines meant steam facilities became obsolete and the roundhouse was abandoned in 1982. A fire in 2001 demolished half of what was left of the roof of the roundhouse, but the bones of the structure are still intact/super-cool looking. While there were once over 200 roundhouses in California, Bayshore's is the last standing brick roundhouse in the state.