This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

A charming remnant of 19th-century fishing towns sits on Michigan’s Leelanau Peninsula.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

In Edwin Hubble's hometown, a scale model of the groundbreaking telescope that was named in his honor.

The seventh largest spring in the world.

An underground river pushes more than 200 million gallons out of this Missouri spring every day.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

Often referred to as the largest spring in America.

A historic, scenic mill that was forced to close due to overlogging.

A 40-foot waterfall flows into this unique natural swimming hole.

Around 50 million gallons of water flow from this spring every day.

Curious cave that stays a cool 56 degrees all year long.

One of the deepest springs in Missouri.

An average of 33 million gallons of water pour out of the collapsed cave at the heart of this spherical spring.

It's as if the herds walked straight out of a fairy tale into the Missouri wilds.

This small turbine mill along Rocky Creek was built in 1928

Though it's thrived abroad, this forgotten Dunkin' rival has just one store left in the States.