Salsa is a national pastime in Puerto Rico; though it didn't originate on the island, it might as well have. For a sultry night of dancing, head to this tiny yet frenetic nightspot, tucked down an alleyway off an Old Town street. Every night, the live band plays a mix of salsa and jazz well into the morning, and open-mic poetry sessions give the wood-paneled hall a bohemian vibe. Tourists meld with friendly locals who are always willing to give novices a quick dancing tutorial.