A mysterious light of unknown origin on the backroads of Missouri.

A boat ride through utter darkness, lit only by headlamps, reveals an emerald green pool locals believe is sacred.

A unique, free-floating electric ferry may be the only of its kind in Europe.

Explore the dark underground corridors of this graffiti-covered former military fortification.

A volcanic fissure over two miles long and up to 70 feet deep.

The seamy, underground secrets of Portland's criminal past.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

On the Oregon coast there is a natural hole that seems to be draining the sea.

An oddly poignant roadside attraction celebrating American folklore.

The Dalai Lama named this New Zealand landscape the "Spiritual Center of the Universe."

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

This Old West eatery along America's Loneliest Road was originally a stop on the Pony Express.

This cave was hidden for thousands of years, storing the worldly goods of ancient Native Americans.

Preserving the remains of Native American cultures which otherwise would have been submerged behind Hoover Dam.

This golf ball–shaped former desert real estate office now houses a UFO museum.

A taste of the macabre Tokyo's ritzy shopping district.

This Seattle store is packed with all sorts of curious creatures and creations.

A colorful architectural gem in Seattle's uniquely modern Central Library.

Stroll through a wonderland of stupendous moss-covered trees.

A walk through the historic city center, under the streets of Seattle.

A giant Troll lurks under one of Seattle's oldest bridges.

A museum of the dime museum that features weird entertainments of yesteryear, from feejee mermaids to flea circuses.

A six-story-tall golden pyramid, surrounded by a moat.

Small-town museum dedicated to outer space ... and bicycles.