Manhattanhenge is created when the setting sun aligns with the city's street grid, creating a ray of light between the buildings.
Every street that runs west to east was cast in a warm glow as sunlight faded into night.
There were plenty of vantage points. The best spots for viewing it were 14th, 23rd, 34th and 42nd streets.
The term "Manhattanhenge" was coined by Museum of Natural History Hayden Planetarium Director Neil deGrasse Tyson.
Check out these amazing photos from Monday night's Manhattanhenge!
Check out this Facebook Live during Manhattanhenge!