The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

The 10th-tallest pyramid in the world, this former sports arena is now home to a massive Bass Pro Shops store.

A Memphis park where you can walk the whole Mississippi River in one go.

The largest spring in Northwest Arkansas is also home to a sprawling botanical gardens and a historically significant bluff.

An extravagant western hotel where every floor is the "ground floor."

This monumental Jesus is often referred to as "Our Milk Carton With Arms."

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Crystal hunters can dig for their own stones at this DIY mine in Arkansas’ quartz belt.

Some of the oldest exposed rock formations in the United States.

One of the deepest springs in Missouri.

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

Often referred to as the largest spring in America.

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

This small turbine mill along Rocky Creek was built in 1928

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

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

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

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

Erosion and time have created a naturally-formed water park.

In the St. Francois Mountains in the Ozarks at 1,772 feet above sea level, Taum Sauk Mountain is the highest (and possibly oldest) peak in Missouri.

Giant granite rocks standing end-to-end like a train of circus elephants.

These pink granite water slides are the result of millions of years of erosion.