One part of the episode guides in Spotted is a locations listing — where your favorite Gossip Girl scenes were filmed. When I went to New York to take photos of the locations for the book, I put together a Google Map so I'd know where I needed to go. And now it all its glory — cleaned up and details added — the map is here for ya. It's not a full list yet, but I'll keep adding locations from seasons 1 and 2, and once season 3 starts (yay!) I'll add those ones too.
View Gossip Girl Locations! in a larger map
A little legend: RED for locations that appear across seasons; GREEN for season 1; BLUE for season 2; and PINK for season 3.