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Cosmo’s Underground Restaurant was one of downtown Las Vegas’s most unique and atmospheric dining spots, remembered for its eclectic style, underground vibe, and role as a gathering place during the city’s colorful mid-century years. Located on Fremont Street, Cosmo’s Underground was below Sassy Sally’s casino in a space previously occupied by a nightclub. It offered something different from the bright neon and noisy casinos above—it was a retreat where food, music, and mood blended into an unforgettable experience. Patrons descended into a cozy dining room filled with low ceilings, intimate lighting, and décor that mixed rustic charm with whimsical flair. It quickly earned a reputation as both a supper club and a late-night haunt, drawing a mix of locals, downtown casino workers, and adventurous tourists. The menu at Cosmo’s Underground leaned into hearty, comforting fare—steaks, seafood, pasta, and American favorites served with generous portions and plenty of personality. Affordable pricing made it accessible, while its quirky character kept regulars coming back. Beyond the food, entertainment was often part of the appeal. Small live acts, piano music, and lounge-style performances created a lively but relaxed atmosphere that made the restaurant feel like an insider’s secret. Cosmo’s was also known for its welcoming, bohemian spirit. It was less polished than the Strip’s glamorous dining rooms but made up for it with warmth, eccentricity, and a sense of authenticity. Stories still circulate of late-night meals that turned into impromptu parties, and of the restaurant’s role as a gathering place for Las Vegas characters from all walks of life. By the late 1970s, as downtown Las Vegas evolved and competition grew, Cosmo’s Underground eventually closed. Yet it remains fondly remembered by those who experienced its one-of-a-kind vibe. Today, Cosmo’s Underground stands as part of Fremont Street’s offbeat history—a reminder that Las Vegas wasn’t only about neon and casinos, but also about hidden gems that captured the city’s spirit of adventure, creativity, and after-hours fun. Today, the property once occupied by Cosmo’s Underground and Sassy Sally’s Casino is home to Circa Resort and Casino.
| Weight | N/A |
|---|---|
| Color | Asphalt, Black, Navy, True Royal |
| Material | Fabric laundered, 4.3 oz., 57/38/5 combed ringspun cotton/polyester/spandex |
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