Manhattanhenge, which is sometimes referred to as the Manhattan Solstice, is a cool phenomenon that occurs, well, in Manhattan. During this phenomenon, the Sun aligns with the streets so that light will shine completely parallel to the buildings.
It actually happened yesterday, Wednesday evening. Many photographers took to the streets in order to snap pictures of this occurrence which happens only twice a year.
The name, Manhattanhenge, comes from Stonehenge. At Stonehenge, the Sun aligns with the rocks on the solstices.
This event does not happen in only Manhattan. Other cities, such as Chicago, Baltimore, and Toronto, also experience a similar effect.