A monument to the three wars that led to German unification towers within a Berlin traffic circle.

An eerie, derelict amusement park in Berlin.

An ancient octagonal weather station named for the eight Greek gods of wind.

A Byzantine church containing the holy remnants of three saints sits atop the site of an ancient temple.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

The nerve center of a massive, state-of-the art radio telescope that sprawls across Western Europe.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

A Nazi concentration camp and Anne Frank's place of death.

Brightly painted boulders scattered throughout the Sinai Desert.

These quaint French houses dangle precariously over a precipice.

Standing stones found on a construction site are re-erected.

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

This stunning natural double arch, the largest in the Alps, went undiscovered until 2005.

The world's second-tallest flagpole stands proud despite dropping rank.

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

This strangely specific landmark will let travelers know when they are half way there.

One man's quest to save his town with a trail of record-breaking sculptures.

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

A beautiful but toxic fountain of mercury.

An experimental, automotive replica of Stonehenge.

Medicinal spa created with the discharge from a geothermal energy plant.

An encyclopedic collection of mammal penises.

Rising from the sea like a stone monster.