This historic cliffside mansion uses a natural cave for air conditioning.

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.

A gem in the small Missouri town where Winston Churchill coined the term "Iron Curtain" and effectively began the Cold War.

University City's quirkiest resident lives in a park named after its first.

Symbolic attempt to overcome the issues of life.

Part of a worldwide art project, this mysterious semicircle of concrete shapes holds the pieces of a larger story.

This abandoned cemetery has a dark past of bodies buried over bodies.

This 19th century mansion façade adorned with immigrant patriotism is a symbol of Louisville’s history.

The largest cemetery in Louisville is the final resting place of Col. Sanders and Muhammad Ali.

Three courses accompanied by Christian rock.

This railroad overpass is said to be home to a murderous goat-man whose very legend has led to very real deaths.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

A lone grave is quietly tucked away in Kanawha Riflemen's Memorial Park.

This abandoned school has had many lives since the early 1900s, and all of them doomed.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

Colorado's only true geyser is hidden within the San Juan National Forest.

The world's longest known cave system.