Degree Confluence Project - aims to visit each of the latitude and longitude integer degree intersections in the world, and to take at least one picture at each location.
GeoWeb - Geographic Information Retrieval (GIR), methods and approaches to make digital geographic information and data more easily accessible to GIS researchers and the general public.
Globe Server - answers geographically-related questions, providing maps, weather reports, and factual information.
Helping Your Child Learn Geography - from creating treasure maps to helping children find pen pals, this site offers many simple, fun activities to teach youngsters the fundamentals of geography. From the U.S. Department of Education.
How Far Is It? - find out how far apart any two places are and see them on a map.