An extraordinary natural landscape of mountains, waterfalls, and rocky cliffs riddled with tunnels.

This Taiwanese promontory is covered in otherworldly hoodoo formations.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This deceiving white sand beach gets its brilliant hue from the chemical discharge of a nearby factory.

A stunning bridge that appears as if it's lunging to the shore, and has a legend of a devilish architect.

Be(w)ar(e) the moat around this historic Czech castle.

The world’s oldest military museum has remained largely unchanged since the last days of the Austro-Hungarian Empire.

A nuclear bunker built to shelter the politicians and important people of Scotland in case of nuclear attack.

People leave coins atop an unusual grave marker in one of Scotland's oldest burial grounds.

The most loyal of little dogs, or a Victorian era publicity stunt?

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

Eighty million natural history specimens call this gargantuan museum home.

The anatomical-pathological collection of a man who changed surgery.

Sweden's "good old days" painstakingly re-created in a model village.

It houses the remains of a 17th-century version of the Titanic.

This chimerical bridge/tunnel appears to dead end right into the sea.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

This German version of Universal Studios holds a vault of treasures from the NeverEnding Story.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

Macabre astrological automaton clock dating to the late 1400s.

A factory director designed what was the world's longest suspension footbridge in 1923 so his employees could get to work safely.