At one of Berlin’s oldest churches, visitors can place mosaic tiles to help restore a medieval mural.

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

In this brilliant blue spring in Germany, legend has it that a sad mermaid learned to finally laugh.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

William Blake claimed to have painted this gothic masterpiece after encountering this nightmarish being in a vision.

A midnight snack that lights up the night.

Local legends say that fairies used to dance in the moonlight here and invite handsome young men into their grottoes.

This one has sailed five times as far as Sir Francis Drake's famous ship.

This unchanged Victorian park is rumored to have been the inspiration behind Peter Pan's Neverland.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

A German town is growing a building out of trees.

A series of haunting wooden totems are hidden in the woods surrounding a German environmental center.

A whimsical art tower at a Bavarian brewery includes a grotto for its mythical beer-brewing dwarves.

Flowers have mysteriously appeared on her effigy every day for the last 150 years.

A rare example of a German cemetery with traditional grave markers dating back several generations.

An old slaughterhouse now holds the largest collection of pig artifacts.

Four-story slides send people whizzing through the math department at this Munich university.

Built to test magnetically levitated elevators, the tower also boasts Germany's highest visitor platform.

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

Romans decided this 16th-century "talking statue" was so ugly, they named it after a primate.

This 21st century cabinet of curiosities includes dinosaur bones, moon rocks, film memorabilia, and more.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.