A commemoration of over 150 of St. Louis's favorite sons and daughters.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

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.

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

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

The narrowest street in Paris.

A giant silver apple a day keeps the perils of capitalism away.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

A 700-year-old drinking fountain turned charity for the less fortunate of Zurich.

A bronze statue of the fictional character nicknamed "Mrs. Hat" from a beloved Belgian comedy.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Meet the bronze beloved pet to a family of famous peeing statues.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

Cat art as far as the eye can see.

The mirrored section takes the shape of Hebrew characters when viewed from above.

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

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

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

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

This North Carolina museum is keeping the pinball craze alive, with a little Space Invaders on the side.