Union Square gets its name from its central attraction, the park where Broadway and Park Avenue intersect. In a few decades, the neighborhood has gone from humble to ultra-hip. With its concentration of lofts, cutting-edge restaurants and designer stores, it’s no longer New York’s best-kept secret. Union Square is also the intersection of many worlds. To the south is the East Village with its punk rock edginess, hip clubs and bars. To the west is the bohemian West Village and the lively neighborhood of Chelsea. To the north is the Flatiron district for more upscale clubbing.