Memorial Day in New York City marks the beginning of summer with rooftop barbeques and cornerstore beers sitting in a cooler of ice. People often forget the historical and cultural significance of this federal holiday. But if you want to break away from the norm, here are 10 unconventional ways to enjoy your three day weekend in NYC.

1. Manhattanhenge

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Also known as the “Manhattan Solstice,” the term Manhattanhenge was coined by renowned physicist, Neil deGrasse Tyson and refers to the time before and after the summer solstice when the sun aligns precisely with streets that run east to west in Manhattan. Starting on Sunday, May 29th through Monday May 30th at 8:12 pm, the best places to see this phenomenon are on 14th Street Union Square and 5th Avenue on 23rd, 34th, 42nd and 57th streets – though any cross street works. If you aren’t in New York City this weekend, you’ll have another chance later this summer.