Back in the Prohibition Era of San Francisco, 430 Mason Street was a space called The Cable Car Theater. Below The Cable Car Theatre was a restaurant called Coffee Dan’s. In actuality, Coffee Dan’s was not a restaurant, but a speakeasy that could be accessed only by a savvy few that would push a secret wall that would lead you to a playground slide. This slide would take you below street level where one could indulge in illicit gambling and the drinking of bootleg whiskey and spirits. In an era of secret codes and handshakes, the speakeasy was a hidden subculture of nightlife. Read more about Slide’s History. Beyond the restored turn-of-the-century doors, the Slide lobby reveals a custom made, serpentine slide designed by Doug Gorley of Playground Designs, but don’t fret, stairs are an option for the less adventuresome. Once inside, old world San Francisco elegance has been reborn thanks to the collaboration of Pamela Pennington Studios (Palo Alto) and Terra Nova Industries (Boulevard, Postrio, Farallon, Niebaum Coppola). Slide is modern and sophisticated but is also reminiscent of the age of gangsters, flappers and bootleg revelry of years past. Outfitted in over 8,000 square feet of mahogany, Slide features a honey-onyx backlit bar, custom brown and blue hardwood floors, pillowed porcelain bathroom walls and copper accents. Booth seating in chocolate brown and baby blue are available for Bottle Service. This underground adult playground is also a perfect setting for socializing: either after work or before the theatre, private social and corporate events.