New York Songlines: Virtual Walking Tours of Manhattan Streets very cool site. If you live in nyc start out by checking out the street or avenue you live on. (i didnt know i lived 5 blocks away from the morgue [on 29th]) You'll find out history, trivia, and stuff you didn't know, like what the hell that thing in Union Square is:

"Stuff on wall, including steam and flashing numbers, constitute an art piece called Metronome. (The numbers are a 24-hour clock mirrored by a reverse 24-hour clock--they meet at noon and midnight.)"