All arts districts eventually outgrow their parameters, as their denizens look for larger, cheaper, more offbeat spaces. The 18b Arts District has begun spreading into the Naked City neighborhood behind the Stratosphere, and Downtown Spaces is one of the strongest footholds on this new frontier. Located in a mid-century office building on Industrial Road, the structure has been glowingly restored and is home to the expected painters and photographers, but also to body painters, retail shops and burlesque studios. On First Friday, the place hops with activity as tenants open their studios to feature their work and additional creative types set up shop for the night—just the kind of sharing and synergy that an arts community needs. 1800 Industrial Rd., Facebook.com/DowntownSpacesDTS.