GeoTree by Geonames.org

It was really fun, doing the geotagging exercise on Geonames. I was just browsing through the website for any more interesting features and found this Geotree service. It's really amazing feature. This service organizes hierarchical structure of geographic places in the continents and other spatial information in a tree view. This geospatial information can be accessed together with a map. It provides further services like CSV Export, different languages, capitals and random view. All locations can be visualized using major web based base map services like Map24, Google Maps, Yahoo Maps, Microsoft, Openlayer, Openstreetmaps, etc. You can see capitals and neighbors of countries. The service can be seen under http://geotree.geonames.org/