Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

A flight of this "ghost staircase" has 40 steps on the way up, but only 39 steps on the way down.

Absolutely no saxophones in the library.

Paris' linguistic guide to the international language of, yes, love.

The main gates have been locked since 1745 and will remain so until the Stuart Dynasty returns to the throne.

The oldest stone house in Paris was built by its most famous alchemist.

This amended headstone marks the grave of a participant in one of the most successful military deceptions of all time.

The lost town of Neversink, sunk by New York City.

On Waikīkī Beach, a monument to four extraordinary individuals of dual male and female spirits who brought the healing arts from Tahiti to Hawai'i.

An Industrial Revolution-era public work that purified water using nothing but sand.

An island in the middle of a lake, in the middle of a volcano, in the middle of a bigger lake, in the middle of a bigger island, in an archipelago, in the Pacific Ocean.

This letter written by Queen Elizabeth II in 1986 won't be opened until 2085.

An award-winning children’s garden enchants visitors at the intersection of natural beauty and fairy tales.

Eulogizing an unknown man's unusual demise.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

An encyclopedic collection of mammal penises.

A secret door leads to this cozy dive that sells only “milk.”

This ancient walled garden turns fog into food.

Once the center of power for the region's various factories.

An actor's tribute to a former mentor.

The long-lost final resting place of an accused witch.

Houses are tucked between, on, and underneath giant boulders.

Comprehensive gaming collection of over 30,000 electronic games and consoles.

The first location of the eventual video game giant.