The oldest operating cemetery in Denver is the eternal home of some of the Centennial State's most famous residents.

These molds for fiberglass statues have formed an eerie, accidental sculpture park.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

A collection of fading fantasy tchotchkes lines this dirt road in the Colorado wilderness.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

Inspired by a music box, a small town Vietnam vet carved an entire carousel full of animals by hand.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

The highest point in Virginia can only be reached by passing through ponies and flowers.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

This research center for rare prosimians is studying how they sleep to help prolong human life.

These eerie outliers of the lightning bug family glow a mysterious blue color.

A piece of outsider public art accompanied by a strange urban legend.

One of the oldest living oak trees in the Southeast.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

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

Crumbling ruins mark the site of a couple's grisly murder in the woods.

The beauty of urban decay, hiding some dark secrets.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.