Psychoanalyst Carl Jung reported a paranormal experience after visiting this mosaic-lined Roman baptistry.

An incredible mosaic-lined monument said to have held the remains of an ancient Roman empress.

Metro station with a claim to rock n' roll fame.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Go surfing on this urban wave, "hacked" by local surfers.

The footprint of a frustrated devil in Munich's Cathedral.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

Climb a set of vertiginous stone steps to the top of this impressive ancient edifice.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

The maze-like transportation hub contains abandoned areas, derelict stores, and a resident bat colony.

Impossibly life-like natural history models created out of glass by a father and son.

Three prestigious academic collections come together to create a world-class natural history museum.

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

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

Travel through the wholesome amusements of yesteryear at this charming miniature village.

This underfoot portrait is the work of a disgruntled painter inspired by a tragic poem.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

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

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

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