Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

Georgia's highest point was given its strange name thanks to a simple translation error.

These beautiful wineries were at the center of Lake Erie's "grape belt" back when the Midwest dominated American wine production.

Deep scars on the earth left by the Ice Age.

Take a drunken tour inside the world's largest known geode.

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

Memorials and tributes scattered across the university grounds remember a famous national tragedy of the Nixon era.

The spectacular collection of one of the world's best woodcarvers.

Meet manatees face-to-face at this zoo for native species.

A beautiful geyser under environmental threat.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

A striking 12th-century-style castle built on the edge of a cliff.

The prototype for all Nazi concentration camps.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

Go surfing on this urban wave, "hacked" by local surfers.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The fairy tale castle of the "fairy-tale king."

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

Strange red rock formations that have been attributed to a higher power for hundreds of years.