Doc Harper's Tavern is a sophisticated martini and cocktail lounge located in downtown Billings, Montana, offering an elevated bar experience with handcrafted modern cocktails and small plates. It aims to create a memorable evening with great company, exceptional drinks, and a lively atmosphere. Adjacent to Doc Harper's is "The Waiting Room," a speakeasy that offers a distinct cocktail menu inspired by the Prohibition era, focusing on bourbon, rum, and gin. While Doc Harper's handles food service, The Waiting Room specializes in unique drinks in an intimate setting. The establishment is named after the owner's father, Doctor Robert Dana "RD" Harper.