http://www.flickr.com/map/
How do I add my photos to a map?
It's easy! To geotag a photo just click "Add to your map" on the photo page (over on the right ;).
To work with more than one image you can open up the Organizr Map and drag photos from the Findr bar at the bottom, to the location where you took the photos.
There's more information about how to geotag your photos in the Organizr FAQs.