A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

More gold than anywhere else, ever.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A huge museum of much more than just agriculture displayed in a princess's palace.

A strange aquarium with stuffed fish, and almost no water for them to swim in.

The largest known Ancient Egyptian obelisk.

In Egypt's expanding metro area, many of the neighbors are dead.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

An ancient city exhumed from the depths of the ocean.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

A simple plaque on the facade is the only reminder that the treaty ending the American Revolution was signed inside.

The Nobel-Prize-winning author of The Stranger is buried beneath a simple gravestone in a sleepy French village.

This is what trains will look like after the zombie apocalypse.

A secret hatch containing two parchments was discovered in this statue over 40 years after its installation.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.

Dramatic sea stacks adorn the coast of this small village on the Adriatic coast.

Giant, pink stuffed rabbit on an Italian mountain.

The glowing blue Nymphaeum of Emperor Tiberius.

The yawning maw of this pagan visage is said to bite off the hands of liars.

The middle finger of modernity.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Stalactites and stalagmites in a beautifully lit cave.

A 16th-century horror show built in a lovely Italian garden.

A submerged archeological park still holds the wonders of a Roman Sodom.