Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A New Hampshire grave with a grudge.

This tomb was fashioned with a sliding window for a grieving mother who struggled with her daughter's death.

This gallery commissioned by Cardinal Spada is known for its magnificent optical illusion.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

This strategically-placed fountain creates the magnificent illusion of mustangs galloping across a river.

Described by William Wordsworth as a "World of Wonder."

This phallic temple was erected in the forest to honor the tragic death of a samurai lord's son.

One of the oldest seagoing boats in the world can be found at the Dover Museum.

The oldest candy store in the world has been selling traditional sweets since 1827.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

Curios, scientific antiques, oddities for sale.

This fully restored synagogue explores the American Jewish experience along the old frontier.

A monument at the site of the Towner School Bus Tragedy, which lead to changes in school bus safety.

The temporary burial site of the man who shot and killed Jesse James.

The site of a minor battle might have been forgotten if not for one participant’s famous family and the death of a respected warrior.

This historic stone barn is the former home of legendary cattleman Charles “Lonesome Dove” Goodnight.

This memorial pays homage to Pueblo's four Medal of Honor recipients.

All that remains of this once-booming mining town are the ruins of a saloon.

The start of the group that straightened the teeth of a nation.

This stone marker honors the man who released Canada goose goslings in Fort Collins, Colorado.

This National Natural Landmark is one of the best examples of a “mass wasting” in the world.

After being lost for nearly a century, this historic bell finally returned home after its mysterious theft.