A French library that makes sure its love of books is writ large... giant in fact.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

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

This iconic tattoo shop has its own onsite museum with artifacts from the early history of modern body art.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

Explore the dark underground corridors of this graffiti-covered former military fortification.

A burial ground of rusting metal grave markers.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

A terrific purveyor of natural history objects and curios.

Tucked in the back of this amazing antique store is an important piece of medical history.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

This enormous banquet-themed artwork honors over 1,000 notable women throughout history.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

A hidden church in a hidden courtyard tells the story of the Miracle of Amsterdam.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

A beautifully eclectic mix of architectural styles.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

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

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

This historic national park is covered in the stunning ruins of red rock pueblos.