Everytrail

Everytrail is a website that allows you to map your trips by adding geotagged photos from your computer to Google Maps. For example see this walk of San Francisco . If you don’t have GPS data to add to your map, you can just draw right on the Google map. You can search other people’s trip maps using the site directory, doing a keyword search, or through the sites world map.

This would be a great way to document a field trip or history in your area with students.