Today is a geeky holiday: the particular celestial alignment called Manhattanhenge where the sun sets exactly in line with the Manhattan street grid, which is about 30 degrees off from perfect east-west orientation.This picture which is taken from 5th avenue, shows the sun setting at the end of 22nd Street. Not exactly at street level and somewhat before the astronomical time of sunset, since the mathematical horizon is obstructed the coastline of New Jersey in the background.
Some more pictures on flickr from 23rd st and 22nd st.