This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

The youngest volcano in Central America.

Play heads or tails with thousands of different coins.

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

Home to the world's oldest functioning orrery.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

On the Oregon coast there is a natural hole that seems to be draining the sea.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

This museum remembers the tough Mormon trek across America through an intriguing array of artifacts.

This ghost town was once a cult-like religious utopian settlement.

Step into the cool deep past and unknown future of who begat who.

A ghost town that held steady longer than most, but finally gave up the ghost.

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

The largest island on the great salt lake is home to curious creatures and strange stories.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

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

Local lore holds that Butch Cassidy took an escape route through Red Canyon's sandstone hoodoos after an attempted murder.

Dig for your own trilobites in this goldmine of invertebrates.

Incredible sculptures inspired by obscure passages from the Bible.

Largest collection of mounted dinosaur specimens in the world.

A replica that won't float away.

Largest man-made excavation on earth!