The National Park Service preserves the cave system and part of the Green River valley and hilly country of south central Kentucky at Mammoth Cave National Park. Visitors experience vast chambers and labyrinths in the longest cave system known (more than 400 miles of the cave system has been explored).
The National Park Service protects what remains of the North American tallgrass prairie in the Flint Hills of Kansas at Tallgrass Prairie National Preserve. A critically endangered ecosystem, less than 4% of the original 170 million acres of tallgrass prairie exists today.
The National Park Service preserves over 200 American Indian mounds in the picturesque upper Mississippi River Valley in Iowa. These mounds are considered sacred by many Americans, particularly the 18 Native American tribes that are culturally associated with the monument.
The National Park Service protects fifteen miles of the southern shore of Lake Michigan at Indiana Dunes National Lakeshore in Michigan City, Indiana. The national lakeshore covers 15,000 acres, with 45 miles of trails through "singing" sand dunes, wetlands, prairie, rivers, and forest. All Indiana Parks
The Lincoln Home in Springfield, Illinois, is a National Historic Site that has been completely restored to its original 1860 appearance. Abraham Lincoln left this home in 1861 to serve as the 16th President of the United States. All Illinois Landmarks
"Land of Lincoln" is the official state slogan of Illinois (designated in 1955).
The National Park Service protects the natural setting of Kīlauea and Mauna Loa at Hawai'i Volcanoes National Park. Here you can experience fiery fountains and rivers of molten lava.
The National Park Service preserves an ancient river valley in Georgia; the Chattahoochee River National Recreation Area.
Everglades National Park protects the largest subtropical wilderness in the United States, a wetland of international importance. All Florida Parks
Abraham Lincoln, the 16th President of the United States and a national symbol of unity and wisdom, is immortalized in a marble statue inside the Lincoln Memorial on the National Mall in Washington D.C. All D.C. Landmarks - All National Landmarks
The farm and artist's retreat of American impressionist pioneer Julian Alden Weir (1852-1919) is preserved at Weir Farm National Historic Site in Wilton, Connecticut.