The area in downtown Dallas west of Central Expressway — across the freeway from Deep Ellum — is a gray area between commerce and nightlife. While the two don’t exactly go together, the dance clubs and corporate highrises seem to coexist here. One good example is Allure, a two-story dance club built into a 100-year old building on Elm Street. From the outside, the building looks like a historical landmark, but on the inside it’s a sleek club with a big dance floor and neon laser lights. The big room upstairs, painted all white, is where ?uestlove from The Roots famously DJed a set for a packed house.