Placeopedia.com allows users to connect Wikipedia entries with their geographical location. What a great way to see what landmarks/historical entries are located near your home town. It allows anyone one to place entries on the map, so if your area is blank you can search Wikipedia for local landmarks and place them on the map yourself. And if the local landmarks are not in Wikipedia, it would be a great start for your students to research, edit, and then publish their entry on the landmark in Wikipedia.