Where hills of dirt conceal the burial ground of one of the most powerful ancient Native American societies.

The largest protected conservation area in the Ozarks—a region that stretches into northern Arkansas and southern Missouri.

Tucked away on an empty wooded lot in suburban Oklahoma City lie the remnants of an abandoned circus camp.

A series of silhouettes that recall the great cattle drives of the 19th-century.

The final resting spot of the Colorado Transportation Department's beloved unofficial mascot.

A surprising collection of bronze faces beneath a bridge in Loveland.

A tribute to Loveland’s most famous sweethearts, who helped spread cupid’s message to millions.

In the early 1900s, hundreds of Black Americans found opportunity in this now-abandoned rural community.

This museum started by a curious collector is now a place for believers and skeptics alike.

What do a giraffe, an elephant, and reasonably priced steaks have in common? This roadside restaurant filled with exotic taxidermy.

This was the first homestead registered after President Abraham Lincoln signed the Homestead Act into law.

Four ionic columns from the Treasury Department building ended up in a park in Nebraska.

Underneath downtown Lincoln resides a network of caves that was also the city's first brewery.

A Mormon place of exile in Missouri.

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

This former Union fort commands a fine view of downtown Cape Girardeau and the Mississippi River.

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

This majestic tree has survived 400 years of storms, droughts, and floods, and is a beloved natural landmark in Missouri.

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

This abandoned prison castle has become an imposing gallery of graffiti art.

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

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

In one of America’s oldest mountain ranges, a long-awaited section of a scenic highway is now open to the public.

An abandoned town is hidden in Great Smoky Mountains National Park.