These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

The largest source of fossilized insects anywhere.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

The highest bridge in America was built for an almost unnervingly small amount of money.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

When ecosystems collide in the arid Southwest.

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

The largest self-built castle in the U.S., six decades in the making.

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

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

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

A sweet symbol marks the place where torturous executions were once carried out.

The most loyal of little dogs, or a Victorian era publicity stunt?

Protecting the dead from opportunistic body snatchers.

A 18th century graveyard and its astonishing cortege of macabre iconography.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

Two plaques commemorate the site of Shakespeare's first theatre.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

Scattered throughout London are ancient remnants of the city's former bounding wall.

One part local history, 99 parts gruesome haunted house.