Half of a waterfall goes into the river while the other half seems to disappear.

Minnesota's highest point is a scenic vista marked by a plaque and armies of mosquitoes.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

The lowest point in the state of Illinois, at the confluence of the Mississippi and Ohio rivers.

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.

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

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

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

Walk the whole Mississippi River!

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

Where the author wrote her beloved "Little House" books.

This small Arkansas town once had a close encounter with the Beatles, and are determined never to let anyone forget that. Ever.

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

Life-size figures portray depot attendants, train crew, and passengers frozen in time at the oldest railroad station in Arkansas.

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

Twenty-year effort to raise a castle using tools and techniques from the 13th century is now abandoned in the Arkansas woods.

An outsider art studio that created a piece of work so popular they had to turn mainstream.

Peak named for an old man who liked to run in the nude.

An abandoned early-20th-century boomtown sits within the Calico Rock city limits.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.

The only diamond mine in the world where you can keep what you find.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.