1New York City
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New York is the best place to celebrate your 21st birthday! There’re thousands of bars and venues to party. Most precisely, over 2600 in one city. Also the metro and other public transport are very punctual and convenient. They pass almost every 5 minutes and leave you close to just about anywhere in the city. Finally, they don’t call it the city that never sleeps for nothing. The parties in NYC are endless.