This landmark cemetery in Boston was created more than 300 years ago.

A centuries-old church stands as a testament to Boston's "father of architecture."

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

The ruins of an ancient city built by Mayan traders is centered around a temple of a sacred feathered serpent deity.

The world's most elegant power lines.

The final resting place of the great navigator, or maybe his brother.

Commonly acknowledged as the only public monument to the Devil himself.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

An ancient Egyptian temple in the middle of Madrid, Spain.

This statue inspired by Renoir's famous painting embodies the jovial spirit of Key West.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

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

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

A downtown park built on top of unclaimed graves.

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

See massive fossils that are over 200 million years old in northeastern Arizona.

The first declared National Monument in the United States.

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

Try not to get slimed in Tribeca.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

A bay of elaborate, historic toilets are held in high esteem at this Scottish dock.