A museum dedicated to the alleged Roswell Incident.

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

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

One of the largest Buddhist stupas in North America is built of concrete designed to last 1,000 years.

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

A technicolor place of worship for Elevationists.

The quirky collection includes treasures like Elvis' underwear, Bob Barker's toothbrush, and hundreds of sock monkeys.

A rainbow-colored house promotes LGBTQ rights across the street from the Westboro Baptist Church.

Tucked away between two 19th-century buildings, this small shop specializes in the macabre.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

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

The profile of one ill-fated deacon was emblazoned forever on this church window during the Halifax explosion.

Site of the first official transatlantic wireless communications.

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.

A medical facility that has been kept frozen in time.

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

Essence of hound's tongue and tincture of bloodroot are just the tip of the herbalist iceberg at this beautiful, impressively-stocked apothecary.

Mile-long cave system near Great Smoky Mountains.

Even Henry David Thoreau found this glacial pothole irresistible.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.