This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

This modern museum of Mediterranean culture is surrounded by a surreal concrete honeycomb.

A French library that makes sure its love of books is writ large... giant in fact.

The world's most famous cheese caves.

Since ancient times these picturesque springs have been providing bathers with healing waters.

One woman's decades-long obsession with the "La Fée Verte."

Dedicated to the art of hunting, with juxtapositions of contemporary art.

This Parisian café sticks almost exclusively to an ethos of reuse.

The curious underground history of keeping Paris clean.

The history of radiation is on safe display at the foot of a radiation science laboratory.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

This massive library holds what was once the largest book collection in the world.

Artist Diego Morlin's war between the natural and human worlds is a wanderer's delight.

This Italian foot path winds through the mountains via 52 individual tunnels.

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

The sinister ruins of one of the worst dam failures of the 20th century lie in this astonishing alpine setting.

The highest waterfall in Italy is only "turned on" five times a year.

20,000 pieces in a Frank Gehry-designed building.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

A downtown park built on top of unclaimed graves.

A unique museum dedicated to the Gullah-Geechee people, housed within an old oyster cannery.

The famous winding walk at Chartres is surrounded in mystery and myth.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.