Swiss vineyards in a UNESCO heritage site.

Over 3km of caverns and caves at the Switzerland-France border contain the largest underground river in Central Europe.

Traversing steep Alpine slopes, this engineering marvel is one of the longest and highest funiculars in the world.

For centuries no one knew there were hundreds of bones and precious artwork hidden beneath this Swiss church.

A cablecar-station-turned-revolving restaurant with 360-degree views of the Swiss skyline.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This small museum once served as a royal hunting pavilion for King Otto Friedrich Ludwig.

A man's head is enshrined beneath a statue near the first building constructed for the modern Olympic Games.

This open air archeological site houses almost as much wildlife as it does classical religious artifacts.

The ghost town where the villagers refuse to leave.

An ambiguous ambience emanates from this centuries old leprosy quarantine.

Ruins of a 13th-century fortress perched above a breathtaking Mediterranean bay.

The oldest standing Byzantine church in Athens is tucked within a monastery in the middle of an upscale shopping district.

This town named for the ancient God of War is home to fewer than a thousand people, but it's the birthplace of the Greek Revolution.

Temple complex that once housed the famous statue of Nike.

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

Paris' fabled purveyor of exotic taxidermy and natural history curios.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.

Large Hadron Collider and the Birthplace of World Wide Web.