Understand the historic and recent use of land in various areas in the United States based on the maps on this site. "These maps show the changes in the landscape, including natural and man-made features, recreational and wilderness...

You may not have seen the monsoon rains in India or Mount Taranaki in New Zealand, but thanks to the Smithsonian's online exhibit, it's easy to observe the earths natural and man made features. Click on "Online Exhibition" to view and...