Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

A museum dedicated to the alleged Roswell Incident.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

Home to items never before seen by the public.

The site of the climactic scene from the classic horror film is now a historic landmark.

A bizarre house filled with an astounding array of collections.

Iconic red and white plaques show the creative names invented to navigate the city streets.

High winds can make this one scary landing.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The meteor that sealed the fate of the dinosaurs landed at this site, one of the largest impact craters in the world.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

New Zealand's epic shrine to all things puzzling.

Highly spherical boulders on the shores of New Zealand.

A galaxy of glowworms—larvae of a gnat—hides deep in the belly of these caves.

This strange geological landscape erupts with sudden bursts of water.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

The glacier tucked within a New Zealand rainforest.

A glacier pocked with ice caves and surrounded by rainforests.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

Tubing through a cave lit with glowworms is a magical underground experience.

A beautiful deserted greenhouse in the middle of a park.

The only castle in North America to ever house European sovereigns.