Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

Science fiction's grandfather has a fittingly marvelous tomb.

A sublime medieval path adorns the marble floor of one of the most beautiful Gothic cathedrals in France.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

The Church of the Annunciation was carved into the face of a cliff, just like the rest of the town of Haute-Isle.

This stunning French estate was so lavish that it landed its original owner in jail for the rest of his life.

A total of 22 tiny bridges cross this canal of the Yvette River, forming a unique trail.

Experience architect Le Corbusier's modernist design for living in the home he designed for himself.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.

Abandoned railway line circling the city of Paris.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

France's national museum of scientific and industrial instruments.

The Hopi-style structure was built by the man who discovered Desert Hot Springs' famous mineral water.

This massive, beautifully-lit underground quarry leaves visitors in awe.

Birthplace of the Tendai sect and home to the marathon monks.

"Excuse me sir, your submarine is blocking my building."

Although it has never been a secret ninja base, this shrine still has plenty of tricks up its sleeve.

A rare example of an ancient Japanese hill castle believed to be the fortress of a legendary demon.

Sidle into a side alley for a taste of sumo wrestlers' traditional hot-pot soup, in a tiny restaurant founded by a former competitor.

The tallest city hall in the world offers an excellent bento box.

Each year this Japanese temple overflows with scowling, bearded good luck talismans.

One of Kyoto's oldest food establishments has supplied soba noodles to temple priests and the Imperial Palace.