Step into a hidden 1920s jewel box inside Grand Central Terminal, where hand-painted ceilings, leaded-glass windows, and a massive stone fireplace transport you to another era. This former private office of a railroad tycoon now pours expertly-tuned classic cocktails—including a beautifully balanced Vesper—amidst Jazz Age splendor that survived a 2016 renovation. Come for the room, stay for the history.