Visit this playground of waterfalls, caves and sinkholes.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

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

Home of an evil witch famous within southern folklore.

Enormous lake at the bottom of a unique cave system.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

Where America's first doomsday cult awaited the end of the world.

Mysterious rocks that ring musically when struck.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

A historic covered bridge is but one example of an oddly prevalent American urban legend.

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

9,000 square feet of vintage and modern mechanical toys, dioramas & sideshow curiosities.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

Traversing these canyons, visitors can take in stunning views and glimpses of the region's history.

This California family's ancestral melon is sold only here.

A fire lookout atop a glacial pinnacle is reached by climbing three vertiginous flights of stairs.

While you're unlikely to find riches here these days, this remote mine is a time capsule of the Gold Rush era.

A picturesque example of brute-force engineering conquering nature.

A 250 million-year-old rock formation has earned a rather unique nickname.

These structures were inspired by both Native American shelters as well as, strangely, an ice cream shop.

Explore more than 130,000 new and used books in the "world's largest outdoor bookstore."

This 252 step staircase offers stunning views of San Jose.

This 19th-century museum inside of a lighthouse is only accessible during low tide.