Sniff the Titan Arum's rotting flesh.

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

A room in New York City that contains 250 cubic yards of dirt.

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

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

Read a book next to a Midtown waterfall.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

The very first subway station in New York City is beautiful, decked out in chandeliers, and ... abandoned?

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

The original "capsule building" is a masterpiece of Metabolist architecture.

This demon atop the Notre-Dame de Paris looks utterly bored.

The celebrated eyesore created by starry-eyed sweethearts.

The birthplace of the builder of the Statue of Liberty is now a museum dedicated to his work.

This anatomical sculpture raises awareness about violence against women and promotes gender equality.

This tiny cafe is one of the last meeting places of its kind, allowing revolutionaries a place to plot.

This ancient theater was once the home of fierce gladiatorial battles.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

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.

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