A school used as a model for public education across the country.

An inconspicuous footbridge beloved by San Diego locals.

Crumbling ruins mark the site of a couple's grisly murder in the woods.

A house carved into a rock in the 1940s.

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

Storyville was New Orleans' historic red light district and hotbed of jazz music, sometimes referred to simply as "The District."

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

This former lieutenant governor's home is brimming with curiosities.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

Despite the ever pressing encroachment of urban sprawl this grand New Orleans manse still stands.

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

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

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

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

A picture-perfect town, perfect for blowing up.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Historic marionette theater features thousands of handmade puppets and free cups of ice cream.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

This grand gothic brewery has been pumping out suds for over a hundred years.