Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

France's most famous cemetery, with some of its most curious tombs.

The best Tiki bar in Las Vegas.

One man has installed bathtubs into the Utah desert floor to harness the powers of a natural hot spring.

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

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

The first declared National Monument in the United States.

Quite simply the largest tree in the world (by volume).

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.

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

A kaleidoscope gallery and steampunk emporium named for a pioneering journalist.

This Old West hotel, the longest in continuous operation in the state of Arizona, is claimed to be haunted.

This open-pit mine is now an abandoned symbol of Bisbee's copper-mining heritage.

These petroglyphs created by ancient Arizonians have withstood centuries of exposure to the elements.

This church on a Tohono O'Odham reservation has stood since 1797.

Stairs often replace streets on the steep slopes of this old mining town.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

Religious statues built because of one man's bargain with God fill this peaceful sculpture garden.

A former department store turned into a quirky restaurant.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

These free-roaming horses were once destined to disappear from the land.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.