The world's only museum devoted to the wonders of fluorescence.

The UK's oldest theme park slowly slips away.

This lighthouse was crafted as penitence for the theft of wine bound for a monastery.

These steps offer a breathtaking view of one of Europe's most besieged fortresses.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

The ruins of this Dutch castle sit atop a labyrinth of once-secret tunnels and passageways, dating back over 900 years.

The location of a citizen uprising that led to a gruesome act of mob justice.

An amusement park on the grounds of an unused nuclear power plant, with a swing ride inside the cooling tower.

This mine was once used to defend the coast from attack during World War II.

This vast World War II defense line was the site of a fierce battle.

Inside this cathedral is a shoulder bone belonging to the Patron Saint of Scotland.

This tower once belonged to a castle fit for a knight.

The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

Largest illuminated advertisement sign in the world.

Twisted buildings adorn the banks of the Rhine river.

This futuristic German television spire is actually the world's largest digital clock.

Legendary site where an evil bishop was devoured by rodents.

Tiny castle in the middle of the Rhine made you pay to pass.

A memorial for a young woman and her ghost, which are claimed to have caused countless deathly shipwrecks.

A statue dedicated to the antihero of the Nibelung legend.

A famed artist's inspiring work of peace and tolerance.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

There has been an astronomical clock on this spot since the 14th century.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.