Celebrate Brooklyn! Celebrate Brooklyn! is one of New York City's longest running, free, outdoor performing arts festivals. Launched in 1979 as a catalyst for a Brooklyn performing arts scene and to bring people back into Prospect Park after years of neglect, Celebrate Brooklyn! was an early anchor in the park's revitalization and has become one of the city's foremost summer cultural attractions. Over its history, the Festival has presented over 2,000 artists and ensembles reflective of the borough's diversity, ranging from internationally acclaimed performers to emerging, cutting-edge artists. All Celebrate Brooklyn! performances are free! The festival attracts upwards of 250,000 attendees from across New York City to the Prospect Park Bandshell each summer.