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.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

This Transylvania County city is home to a rare white squirrel population that is descended from an escaped carnival animal.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

This set of rickety spaceships are prepared to give alien travelers a place to relax and go to the bathroom.

One of the oldest living oak trees in the Southeast.

"X" marks the spot of an echo chamber in the middle of a plaza.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

This quirky curiosity shop takes its cues from the world's bazaars.

Hidden amid the old-world charm of Savannah is a museum dedicated to the world of oddities and criminal history.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.