These ancient rune stones plucked from the countryside now call this university park home.

The indecision over what to place in this square was immortalized with a plaque.

Legend has it that this large rock maze in Sweden was created as punishment by the daughter of a wealthy captain.

The world's biggest version of the popular Swedish souvenir.

One man's fascination with Turkey led to this backyard mini-city.

A steel paper plane is all that remains of a crashed aircraft that caused an amazingly small amount of damage.

Sweden's oldest street has not changed for nearly a millennium.

Every Tuesday, students let off steam by screaming into the night air.

Although rarely used, there is still a hidden room for the royal family at the Stockholm central station.

This remarkable parking garage in Darmstadt has lived several lives and still contains remnants of its World War I past.

One of the oldest student jails in Germany.

Home to the world’s oldest seismograph and a four-ton steel ball that makes its own earthquakes.

Twelve sweet, nutty, life-sized statues are housed in this second-story shrine to almond paste.

Inside this Jewish cemetery is a memorial to soldiers who deserted the German army and were executed.

The remains of three Luftwaffe launch pads designed for manned anti-aircraft missiles.

This giant, 83-year-old ship elevator is an engineering feat to behold.

Every half hour the eye-rolling clock face sticks out its tongue to mock the good citizens of Koblenz.

A fascinating little museum dedicated to the thousands of chemical substances concealed in our food.

A 12th-century fortress containing some of Berlin's oldest buildings.

The greatest amusement park in the world is wall-to-wall farting dogs, puking rats, and cows with exposed breasts for the whole family.

The art critic claiming that "only an ape could have done this" was in fact right.

These miniature works of art are hiding in plain sight on buildings around the city.

A colossal strolling Pinocchio that was greeted with more outrage than whimsy.