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

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

A mechanized clock where a man fights off a dragon, crab, and rooster.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

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

Notorious artist squat renovated into legal studios.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

This funky former tobacco factory is one of the most striking examples of Madrid's cultural diversity.

Stuck in the middle of a modern Madrid city block are the remains of a 19th century sports complex.

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

The earliest known map to show America, discovered by accident at a Paris bookshop.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

An abandoned jewel of a ballroom on the top floor of Australia’s busiest rail station echoes with the sounds of a bygone era.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

This Old Testament garden features 100 plants from biblical times.

From bench to vandalism to art, this silly prank seat was funny enough to become permanent.

Its vintage camera collection gives a snapshot of the past as viewed through a photographic lens.

A wooden statue of an Estonian pagan god and King of the Setos stands atop a sacred hill.

Where the Great Wall of China meets the sea.