Thousands of New Yorkers and tourists gathered to photograph a natural phenomenon known as Manhattanhenge. This is when the setting sun is perfectly aligned with the east-west numbered streets of New York City's grid system. Manhattanhenge occurs twice a year either side of the summer solstice, around 28 May and 12 July. The phenomenon gets its name from the way that Stonehenge is aligned with the setting sun on the summer solstice.

Instagram and Twitter have been flooded with fantastic Manhattanhenge photos. IBTimes UK publishes some of the best in this gallery.

More from IBTimes UK