A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

A haunting collection of the vanished and disappearing natural world.

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

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

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

France's national museum of scientific and industrial instruments.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

France's most famous cemetery, with some of its most curious tombs.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

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

These unconventional "tub boats" let locals row around the island's turbulent coast.

High in the mountains of Kochi Prefecture, a magnificent library designed by a world-famous architect.

Copenhagen's celebrated theme park and gardens.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

Roots and stumps that lay inundated for two millennia are on display in Japan's city of three mysteries.

A sculpture that resurrected the only tree standing following the devastating 2011 tsunami.

The largest of the Fuji Five Lakes is home to an impressive swan population—some real, some with paddles, and one with an observation deck.

This subterranean spot might be the epitome of Japan's baroque, retro coffee houses.

A tiny collection of traditional Japanese woodblock prints, open only when the owner feels like it.

The buildings are among the few Frank Lloyd Wright structures still standing in Japan.

This tiny museum hidden above a restaurant houses thousands of modern and traditional kites.

This isolated Japanese mountain village untouched by time showcases unique and stunning traditional architecture.

People from around the world visit the shrine of Japan’s legendarily loyal dog.