An underwater city for the dead.

The island residents are known for taking their quirky sense of humor with them to the grave.

A monument celebrating the idea of reaching inaccessible places.

Here’s how Robert the Doll earned his reputation as the most haunted doll in the world.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world’s largest coastal brick fortresses.

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

This 19th century jail was mainly used to incarcerate the drunk and disorderly.

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

The highest bridge in America was built for an almost unnervingly small amount of money.

There are eight natural springs around town, each with a slightly different taste.

A lively annual event in which thousands of people race to push coffins heavy with bodies up a hill.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

This super steep hike ascends 2,000 feet in less than a mile.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

This grand stone tower was dedicated to a famed American humorist almost by coincidence.

Small teepee-like houses built for TB patients have become sheds, studios, and bus stops around Colorado Springs.

Hidden beyond a kitschy giant beetle is this remarkably sprawling collection of preserved insects.

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.

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

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

Strange red rock formations that have been attributed to a higher power for hundreds of years.