Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

A haunting collection of the vanished and disappearing natural world.

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

Week-long block party becomes a competition for the best decorated street.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

A dramatic art installation features a BMW flying out of a building in Rotterdam.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

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

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

The ornate miniature mansions were built for Istanbul's feathered residents.

The steepest classic funicular in the world glides along a dizzying incline.

A breathtaking bridge that crosses a vast gorge over a river's torrents, and has a tale of a devil architect attached.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

These spooky and unusual stone formations create an underworldly landscape.

The tallest outdoor elevator in Europe rockets passengers on a dizzyingly precarious ride to the top of a mountain.

This amazing pedestrian suspension bridge in the Swiss Alps would give Indiana Jones nightmares.

One of the highest emergency huts in the world has been waiting almost a century to give imperiled climbers a place to lie down.

Spiral alpine structure provides an alternative experience of viewing the Matterhorn.

Caves famous for the dragon-slaying saint who lived there.

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

The house that took a plunge into the facade of a museum.

This cubist Vienna church building looks like some sort of alien stonehenge.