This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

The world's largest second-hand graces a clock surrounded by constantly changing flower beds. 

Unconventional site where the tracks of Zurich tramcars intersect.

One of a series of no-purpose kinetic artworks by Swiss sculptor Jean Tinguely.

At 929 pounds and 26 feet tall, this stainless steel fork can only be used by the likes of King Kong.

Vines grow up the metal bars in this public park created from an old machine factory.

This enormous monument is one of the most iconic structures in Tokyo, rudely nicknamed "The Golden Turd."

Mythical beasts symbolizing the city of Tokyo guard a historic bridge.

This little replica of Lady Liberty provides a bit of NYC in a Japanese city.

This sprawling scenic burial ground is the final resting place of Japan's last shogun.

Thirty architectural gems from the 19th- and early 20th-century Tokyo were restored and relocated to this space.

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.

Once a black market electronics marketplace, now an otaku shopper's paradise.

Not quite the menace it once was, this monster still has some chops.

A 20-meter (65-foot) robot towers over Tokyo Bay.

Tokyo’s only Vaudeville-cuckoo clock–steampunk-Victorian curio cabinet time piece.

The "dragon babies" of southeastern Europe.

A whimsical bridge adorned with decorative dragons.

A miniature train-ride through Slovenia's largest cave system.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.