9. The Back Room

The Back Room film location for Billions

Mafee and “Dollar” Bill Stearn unexpectedly run into each other at The Back Room, one of Manhattan’s most popular hidden bars. Patrons enter the bar today the same way they would during the 1920s when the bar operated as a Prohibition-era speakeasy. You walk past the storefront of the Lower East Side Toy Company and down an alley until you arrive at the door. Inside, drinks are served in teacups.