The celebrated eyesore created by starry-eyed sweethearts.

Paris' linguistic guide to the international language of, yes, love.

Massive galleon from a box-office bomb docked in Genoa.

Once home to one of the oldest banks in the world, this building is also where Marco Polo's famous travelogue was written.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

This winding road through an Italian canyon may be the most scenic drive in the world.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

These 12th-century catacombs carved into a mountainside were a place of mysticism and Christian hermitages.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

This sculpture of a rhinoceros suspended above a city square is meant to evoke the weight of the human condition.

A fake medieval village in the middle of Turin.

When this funny little building went up in the 19th century, most people thought it would simply fall over.

The intricate geometry inside this Baroque-style dome was designed to create "terror of the human soul."

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

A striking 12th-century-style castle built on the edge of a cliff.

This museum tells the story of lake dwellers from 4000 BC to 850 BC, replete with stilt houses and goats.

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

This strange statue features a bust of the famous composer plopped atop a woman's body.

The medieval network of canals hidden underneath the city is opened to explorers each year.

An opulent monument built for a duke who donated his entire fortune to the city of Geneva.

The world's largest second-hand graces a clock surrounded by constantly changing flower beds. 

An 11th-century fortress home to one of the most influential royal houses in medieval Europe.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

The oldest and smallest cemetery in Paris is only open to the public twice a year.