Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

A reproduction of earth's many biomes.

The trials and tribulations of marking Poe's grave.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Make your reservation to have coffee with some kitties.

Mysterious 500-year-old tapestries depict a unicorn hunt.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

This lab's maddening silence is good for business but bad for sanity.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

All that's left of the quintessential "cabin in the woods."

Seattle's own bad art museum located inside Cafe Racer.

The largest earthwork effigy in the world.

The scuba diving training facility was named for the steam that rises from the cave's chimney.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

The secret city built by the Manhattan Project.

The angel of death appears to weep black tears at this grave marker.

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

Collapsing castle on the Hudson river was once the storage site of military surplus business.

One part antique store, one part curiosities hodge-podge.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.