The best places to watch Manhattanhenge
Celebrity scientist Neil deGrasse Tyson, who coined the term "Manhattanhege," recommends watching it from Manhattan's biggest east-west streets; specifically, on 14th, 23rd, 34th, 42nd, and 57th streets, facing west toward the Hudson River. The further east your vantage point, the better, according to Tyson. Some the city's more iconic edifices, like the Empire State and Chrysler buildings, take on mesmerizing sheens when blanketed with all that light, he said.
Still, if you're not trying to wade through all the selfie sticks and fanny packs in the middle of the street, there's the High Line and many of the aforementioned rooftop bars. Also, street-facing fire escapes may serve good perches.
If you're in Manhattan, it's crucial that you're within the grid system. You can't see Manhattanhenge in say, the Lower East Side, which is its own maze of tight-knit blocks. However, you can see Manhattanhenge from parts of Brooklyn and Queens (GASP!) along the East River, but you're going to need an eagle's eye view west to New Jersey.