The Castro’s legendary Twin Peaks tavern may be named a historical landmark by the city of San Francisco next month.

It’s believed the mainstay gay watering hole was the first to have clear, floor-to-ceiling windows that let the sun (and passersby) peer in, back when it debuted in 1972.

Located at 401 Castro Street, it was the first gay bar in the city to have clear glass windows at a time when people could be fired based on their sexual orientation. The San Francisco Historic Preservation Commission voted last month to support the bar’s nomination, and gay District 8 Supervisor Scott Wiener has sponsored the ordinance before the board to landmark the bar.

A Board of Supervisor committee will vote on the measure on December 1o, after which the mayor is expected to sign it into law.

h/t: Joe My God