At 207 feet, one of the world's longest continuous escalators.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

Rebuilt remains of a temple to Roman god Mithras.

A 60-room castle constructed by a horse-racing heir.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

An 80-year-old house built out of newspapers.

The world's brightest bioluminescent bay.

Largest Roman Catholic church in North America.

This massive redwood tree has a hole in the base big enough to drive through.

Oldest church in the United States that is still in continuous use.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

The infamous Boston Mob ran rackets from an office here in the 1970s.

Stolen goods adorn the organ at Old North Church.

Shelves covered in dozens of coffee bean varieties fill this North End institution.

Haunting and beautiful trees, doomed to die.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

Why have you never heard of the second most popular tourist site in New York?

The 10,000 Torii shrine.

Every year, over 25,000 monarchs overwinter in Pacific Grove.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A 1920s speakeasy that had rum runners racing up and down the shores of California.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.