Following the spatial turn in cultural studies, ethnic space is understood as a cultural category, constructed by discourse and determined by capital, within which people create their own narratives. This essay explores the construction of ethnic space and identity in the phenomenon of the Polish American polka music festival. Framed by the attention to the process of “production of space” (Lefebvre 1991), the essay presumes that new conceptualizations of spatiality assume space is no longer treated as something given, a pre-existing territory, or locale. The case study of the ethnic music festival is an ideal place for examining the invention of place, because it is not located in a fixed space, but in a movable community traveling from festival to festival. The polka festival circuit is attended by a core community of polka boosters, many of whom travel from event to event in vacation motor homes, with attendees setting up "neighborhoods" of motor homes that include front lawns, outdoor kitchens, and "streets." Most bring lawn signs, street signs, flags and other public signs of Polish American identity, recreating—this essay argues—the urban ethnic neighborhood of previous immigrant generations. Polish American ethnic identity for this group of participants is located and recreated in an imagined community that it creates, dismantles, moves and recreates in a mobile spatiality of ethnic belonging.