After taking their van and airplane tour, students may want to visit these sites for additional information and enrichment.

The Corps of Discovery is everywhere on the Web. The Lewis and Clark Trail website from the National Park Service provides a history of the trail, maps, and links to various sites along the trail. Lewisandclarktrail.com is a commercial site that has a virtual tour of the trail along with historical and geographical information. The Lewis and Clark Trail Heritage Foundation contains a written history of the Corps of Discovery.

The official website of Yellowstone National Park should be every on-line traveler's first stop for the great national park. The site has on-line history and nature tours, detailed information about the park, and a kid's page with fun activities.Yellowstone Net also provides a virtual tour, including videos of wildlife and the great geysers of the park.

Leadville.com is the on-line guide for the nation's highest incorporated city. This commercial site covers the history of the city and the Twin Lakes area and also provides a photo tour of the city. For additional information about mining in the West, the Colorado Ghost Towns website has an on-line tour of 15 former mining camps, with historical information and current images of each.

Although it's not the same as the real thing, the Disneyland website does have an on-line tour of one of America's favorite vacation destinations. The site also containsgames and links for younger kids.

The California Farm Bureau Federation is a helpful site for both teachers and students. The site contains the latest news about agriculture in California, lesson plans for teachers, and a special section for young farmers and ranchers.

The Columbia River Gorge National Scenic Area website from the National Forest Service has a great array of information about the area. The site details the many waterfalls of the gorge (with some awesome pictures) as well as the flora of the area. The Center for Columbia River History also has a fabulous website that details the history and use of the Columbia River.

The Iditarod website is a great place to start in search of more information about America's last great race.Scholastic magazine also has an Idiatrod - Race Across Alaska website that is very user-friendly, with maps, trivia, and interviews with mushers and authors.

Want to learn all about Hawaii? Try All About the Aloha State from the state website, with information on everything from trade to natural resources to the Hawaiian language.