Come for the speed, leave in love with the desert.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

One of the largest private collections of fossils in the world.

Every president in history is immortalized in bronze in downtown Rapid City.

Thanks to a loophole in property ownership, this alleyway has become a cacophonous street gallery.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Themed gardens, a conservatory, and a rose named for Milton Hershey, all overlooking Hersheypark.

This mobile theater show highlights the story of Hershey through fun facts, unique stories, and plenty of candy samples.

FDR's Art Deco hospital tower was hopelessly inefficient.

Maryland's first (and last standing) toll house on America's first federal road established the state as the "Gateway to the West."

The world's oldest continuously operating airport was founded by the Wright Brothers.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

A priceless collection of the Nation's cryptologic history.

The world's longest known cave system.

This recently restored timepiece has stood all around Kansas City.

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

A building so large that it has its own weather.

Forever immortalized in concrete, this Simpsons etching was crafted by show creator Matt Groening.

The bomb-ravaged remains of of a colossal Neptune.

Five candy-colored villages on the Italian Riviera.

The bright red cars take travelers through breathtaking Tuscan scenery.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.