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

Two thousand artifacts from around the world collected by one woman who loved to travel.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

An emerald-green grotto just a short trip from Austin.

A snapshot of the city's fascinating voodoo culture.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

South Korea's women of the sea have completely flipped their society's structure by becoming revered fisherwomen.

South Korea's only sex-themed park.

A theme park made of glass, from the gleaming books on the shelves to the crystal fish in the mirror lake.