The Belmont Theater District is Chicago's largest theater district â€“ with 50+ theaters/theater companies in Chicago's robust Lakeview neighborhood (Diversey 2800N - Irving Park 4000N). BTDCHICAGO.COM is Your Ultimate Guide to Chicago's largest theater district. Find the perfect show playing on any given day, and Free & Under $15 Theater Tickets. The BTD offers theater lovers the best of edgy neighborhood theater, the countryâ€™s largest concentration of improv theaters, daytime & late-nite shows, adult and all ages shows, standup comedy and dinner theater. Select theaters include: Annoyance, Athenaeum, Blue Man Group, TimeLine, Theater Wit, Stage 773, and Laugh Factory.