Gough & Washington St, San Francisco, CA, United States
Clusters of trees dot this four-block-square oasis for sunbathers and dog-and-Frisbee teams. During the 1860s a tenacious squatter, Sam Holladay, built himself a big wooden house in the center of the park. Holladay even instructed city gardeners as if the land were his own and defied all orders to leave. The house was finally torn down in 1936. On the south side of the park, 2151 Sacramento, a private condominium, is the site of a home occupied by Sir Arthur Conan Doyle in the late 19th century.