The oldest bar in Missouri is hidden within a limestone brewery cellar more than 50 feet underground.

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

The seventh largest spring in the world.

A short boardwalk through a swamp leads to the spot from which the Louisiana Purchase was surveyed.

A large stone map of Arkansas awaits visitors to its highest point.

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.

One of the oldest of its kind.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

This elaborate towering structure was once famed for its revolutionary height.

A layered tribute to the work of mosaicist Isaiah Zagar.

A celebration of the animation wizard's childhood home and antique railroad memorabilia collection.

The grandson of a Kiowa chief created what has become the iconic symbol of a city on the Plains.

A Kansas nature preserve protecting the plants and animals that once stretched across central North America.

Once a giant oak that served as the region's post office.

A Kansas grassroots sculptor decorates the local roadways with his sculptures made from found objects.

This historic railroad hotel built from Kansas limestone was once the most popular hotels for traveling salesmen in the midwest.

This three-dimensional brick mural is the longest of its kind in the United States.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

At the top of the hour, this steam-powered clock's eight brass whistles play "Back Home Again in Indiana."

This stately clubhouse has showcased German-American culture for over a century.