This web site is one of the world's largest online databases, providing free public access to a vast store of aerial photographs and digitized topographical maps of the United States, provided by the U. S. Geological Survey (USGS). TerraServer is designed to work with commonly available computer systems and web browsers over slow speed communications links. You can visit your own neighborhood or take a look at famous places such as National Parks. There are four ways to search for imagery: (1) enter a specific place name, (2) use TerraServer's "Advanced Find" search feature, where users can enter latitude/longitude coordinates (3) click on the world coverage map, or (4) locate places of interest by using TerraServer's list of Famous Places. USGS digitized aerial images are expected to cover 100% of the conterminous United States by the end of 2001. The USGS digitized topographical maps cover 100% of the conterminous United States and Hawaii.
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