A cave dug by a man directed by ghosts to find pirate treasure.

Dim sum, served in a grand old theater.

A New England ghost town features a trail of boulders etched with intriguing life lessons.

Museum dedicated to awful artwork.

An eccentric inventor's castle home with its own indoor weather system.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

This boulder with a 200-word legal dedication to God has remained hidden in the woods for over 150 years.

The remains of a hospital ravaged by fire, once a progressive place of innovations for disabled children.

The world's longest known cave system.

Medicinal spa created with the discharge from a geothermal energy plant.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

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

The first declared National Monument in the United States.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

World's first "penitentiary," meant to be humane, drove men insane.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

A walk through the historic city center, under the streets of Seattle.

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

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.