A RiNo original restaurant, bar, and music venue featuring Chicago style thin crust pizza, wings, sandwiches, local craft beer and much more. We are open for dine in, take out and delivery. Established in 2005. Launched in 2005, The Walnut Room arose out of owner John Burr's vision to combine his expanded rehearsal studio business, Soundstructure Studios, with a place where local musicians could relax after a rehearsal session and enjoy Chicago style thin-crust pizza, sandwiches, and beverages. That concept evolved into a full-service restaurant/bar and live-music venue, The Walnut Room in Denver's River North (RiNo) neighborhood, where bands can hone their performance skills and music fans can enjoy some of the area's best talent.