El Chapultepec ("The Chup") - Denver's long-running jazz club

El Chapultepec, located at 1963 Market St, opened in 1933 and is widely cited as Denver's longest-running jazz club. The small downtown venue has operated for decades as a spot for jazz, blues, and small-ensemble performances and is frequently noted in histories of Denver music for its continuity and role in supporting local musicians. Its continuous operation contributes to the city's documented jazz legacy.