A miniature city, once ruled by the Queen of the Netherlands.

Go inside to really appreciate this 500-year-old technological masterpiece.

Da Vinci's equestrian statue, 500 years in the making.

2300-year-old Roman road connecting the empire.

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

The largest stone circle in the world has ended up bringing up more questions than it has answered.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

A building so large that it has its own weather.

At 207 feet, one of the world's longest continuous escalators.

There just so happens to be a court even higher than the U.S Supreme Court: a basketball court in the building itself.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

This erect, phallic geological spire wasn't always named so domestically.

Home to the deepest rift anywhere on Earth.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

The only road through the heart of Glacier National Park.

A smoke stack so large, the Washington Monument could fit inside!

New fungal and bacterial species call this deadly lake home.

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

One of the oldest living oak trees in the Southeast.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.

Oldest unrestored plantation house in America that is open to the public.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.