Indents in the pavement are all that remain from a grisly death machine in Paris.

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

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

Notorious artist squat renovated into legal studios.

This statue intended for children to enjoy became a minor political spat.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

One of the few remaining monuments dedicated to South Boston's Irish heritage.

Ice cream stand, snack bar, and time capsule of milk conveyance.

A beautiful Victorian-era cemetery, complete with a miniature village.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

The South's nickname was supposedly born at a former bank in New Orleans' French Quarter.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

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

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

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

The world's largest collection of fine-scale miniatures and one the nation's largest collections of antique toys.

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

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

38-story baroque tower reflecting Detroit's rise, fall, and possible rise again.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

Berry Gordy Jr.'s old home was the original headquarters of Motown Record Corporation.

A palatial sculpture park was built illegally and in secret by a self-taught artist over 36 years.

An art-filled botanical garden and former dyeworks hiding in plain sight.