A colorful, century-old cemetery of the Yaqui Indian Tribe hidden amid the suburban sprawl of Tempe, Arizona.

A mysterious "wedding cake" castle in the middle of the urban desert.

An exotic wildlife habitat right off The Strip.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

Taste the white whiskey that the United States' first president once distilled and enjoyed.

This pharmacist and his patient greet visitors to the National Community Pharmacists Association.

Long buried under the 20th-century landscape, this lift lock of the Alexandria Canal is the lone remnant of an ambitious early American transportation project.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

From Japan to Italy, this California park explores the world's cultures through their gardens.

A basement full of treasures lies beneath this inn that has worn many hats throughout its 140+ years.

Don't get it twisted: This is the oldest pretzel bakery in the United States.

The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

The saga of the massive nut begins and ends in Texas.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

The oldest farmer's market in America is so ancient it was approved by the King of England.

America's first federal monument.

Once the largest trading firm of enslaved people in the U.S., this building is now a museum that preserves Alexandria's dark past.

The home of the first American-born saint is one of the only curved buildings in New York.

Phil Mortillaro uses keys to bring art back to the Village.

Rummage through this sunken ship, but leave your scuba gear at home.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.