The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

A monument celebrating the idea of reaching inaccessible places.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

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

One man's quest to save his town with a trail of record-breaking sculptures.

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

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

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

The only road through the heart of Glacier National Park.

This stoic, if derpy, giant stands as a monument to Oregon's statehood and the novelty culture of yesteryear.

A collection of colorful dinosaurs hidden in an actual rainforest.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

A massive sea stack famous for its appearance in The Goonies.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

Only known mainland rookery of the threatened Stellar sea lion.