You can find these lampposts throughout Central Park. Not only are they attractive, they can help you figure out approximately where you are. Look for a small metal tag near the base with four numbers, for example "7624". The first two numbers signify the street (in this case 76th) that is directly outside the park to the east or west of your position. The second two numbers seem to be arbitrary, but are unique to each lamppost along that east-west axis.
If you ever find yourself in an emergency in the park, you can call the police and give them the 4-digit number of the nearest lamppost; they'll know within a few dozen feet where you are.
The blossoms just beyond the lamppost in this photo are cherry trees in full bloom in mid-April. I used Channel Mixer in Photoshop CS3 with the red filter preset to convert the image to black-and-white and bring out the blossoms.