715 Harrison is a nightclub venue located in the SoMa neighborhood of San Francisco, California, known mostly for hosting Club X since 1989 and previously City Nights from 1985 to 2020.

The club is designated by San Francisco as a legacy business and is one of the few venues in the Bay Area consistently open to guests above 18 years of age, rather than 21.

The property where City Nights first opened, located at 715 Harrison Street, was originally a gay bar known as "Dreamland", as well as hosting the Harrison Street Theater, until it was acquired by Hahn; he credits Oasis, a local gay bar, for inspiring his interest to open up City Nights.

City Nights' attendees are advised to expect a very large young crowd due to the general lack of clubs in San Francisco open to people under 21; City Nights additionally credits itself as being the only 18+ Top 40 and hip-hop club in San Francisco.

The event was first created in 1989, and the name "Club X" was coined as a way to note the large audience of university students from across the Bay Area.

[14][1][13] On Tuesdays, 715 Harrison hosted "Roderick's Chamber" and "The Go-Go", events themed around and targeted towards the Goth subculture.

During the late 1990s, Roderick's Chamber in particular was considered among the top Goth-targeted nightlife events in Northern California, and especially favorited by fashion-focused members of the subculture.

[15][1] Starting in 2023, 715 Harrison began to host "Ritmo Latino", a new Friday event which featured cumbia, reggaeton, bachata and dembow.

The ISIS supporter, named Amer Alhaggagi, suggested hitting nightclubs and other popular places in San Francisco and while suggesting that all San Francisco nightclubs were crowded, City Nights was the club which the news reported Alhaggagi planned to bomb.

Guzman further notes that despite returning attendees experiencing nostalgia after marking their 21st birthday many people tend to refute and hate on the club once they turn 21.