The world's largest prehistoric copper mine had 30,000 animal bones scattered throughout the maze of passageways.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

When the rain falls, this drain system turns into a musical instrument.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

Long hidden under grime, the politically radical murals of a little known Yugoslavian master are finally getting their due.

See massive fossils that are over 200 million years old in northeastern Arizona.

Once America's tallest structure, now a Baltimore landmark.

One of the great treasures of Neolithic art lies within this carefully constructed pile of rocks.

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

A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

Before Nixon, "watergate" meant canals.

Standing stones found on a construction site are re-erected.

At 929 pounds and 26 feet tall, this stainless steel fork can only be used by the likes of King Kong.

Scattered throughout London are ancient remnants of the city's former bounding wall.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

The historic home still shows the scars from a little run-in with the British in 1813.

Underwater restaurant at the coral reefs of Eilat.

A floating underwater hotel, created by a Swedish artist.

A winding, blood-red tunnel of hardened lava navigable by foot.

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.