The oldest surviving synagogue in New York City is now a soaring art space.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

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

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Mysterious 500-year-old tapestries depict a unicorn hunt.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

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

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

One of only two commuter aerial tramways in the United States.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Sniff the Titan Arum's rotting flesh.

Ride the subways of yesteryear.

Elevated freight railway turned wildly successful urban park.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A crumbling hospital from the 1850s on Roosevelt Island.

A terrific purveyor of natural history objects and curios.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

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

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

France's most famous cemetery, with some of its most curious tombs.

This historic hotel preserves many treasures from its heyday hosting passengers on the Orient Express.

This hidden gem is bathed in beautiful natural light.