Unknown Caller is a whimsical speakeasy-style cocktail bar located in Chattanooga's vibrant Cherry Street district, accessed through a signature telephone booth entrance. The ever-changing menu features innovative cocktails alongside classics, and guests can enjoy comfy booths or an outdoor alley patio. Marked by distinctive pink lighting, the bar operates daily from 5pm–1am (until 2am on weekends) on a first-come, first-served basis, offering volcano bowls, local beers, and shareable cheese boards alongside expertly crafted drinks.