This riverside restaurant has been serving customers since 1146.

The topiary maze at the Habsburg hunting lodge.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Three hundred years of preserved Spanish colonial history in San Antonio.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

When ecosystems collide in the arid Southwest.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

Legends surround this jagged rock formation in the New Mexico desert.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

See massive fossils that are over 200 million years old in northeastern Arizona.

Watch bison, elk, and other wild animals up close at this national park.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

A herd of colorfully painted bovine statues can be found in the middle of "cowtown."

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

This general store is a one-stop-shop for workers at the Prudhoe Bay oil field.

The stickered marker pinpoints where the only maintained road in the United States crosses into the polar region.

This gravelly, dangerous highway is the only road in the United States that leads to the Arctic Ocean.

The northernmost truck stop in the United States.

North America's first frozen mummified remains of an ice age steppe bison, the 36,000 year-old mummy named "Blue Babe."

The king of U.S. high points towers over every other peak on the continent.

An Alaska livestock farm devotes itself to harvesting wool from creatures that once ran with mammoths and sabertooth tigers.

Considered by many to be one of the most dangerous highways in Alaska.

Clean, cold drinking water flows from a nondescript pipe in a roadside rock face.