Noirish green neon marks the location of one of the oldest private detective agencies in France.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

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.

The oldest stone house in Paris was built by its most famous alchemist.

The "first cat," "first dog," and even a presidential pygmy hippo all get their due in this museum.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

A model home in the Medical Examiner's Office in which grisly death scenes are staged to train forensic investigators.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

The land is home to swimming ponies and a legendary 18th-century treasure.

This free, take-a-book shop seems like a trick but isn't.

Eighteen miniature death-scene dioramas.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

This stunning home looks like it belongs in medieval Europe, not North Carolina.

The North Carolina grounds are leased in perpetuity to the British Commonwealth for as long as the WWII sailors are buried there.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

One of the best places to see feral Colonial Spanish Mustangs in the United States.

This bright yellow relic is the final survivor of a short burst of seashell-shaped petrol pumps.

Performers, intricate sets, and a real speakeasy tell the story of the 18th Amendment.

A man's home is his castle.

This quirky curiosity shop takes its cues from the world's bazaars.

Tour the sci-fi-esque reality of governmental disease management.

This Nebraska town wants to double its population with plywood cut-outs of townsfolk.

This otherwise innocuous bodega was once the headquarters of the most feared assassin's guild in American history.