The Duboce Triangle is a neighborhood of San Francisco, California, located below Buena Vista Park and between the neighborhoods of the Castro/Eureka Valley, the Mission District, and the Lower Haight.

The Castro District, commonly referred to as the Castro, is a neighborhood in Eureka Valley in San Francisco. The Castro was one of the first gay neighborhoods in the United States. Having transformed from a working-class neighborhood through the 1960s and 1970s, the Castro remains one of the most prominent symbols of lesbian, gay, bisexual, and transgender (LGBT) activism and events in the world.