Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Mysterious rocks that ring musically when struck.

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

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

This 40-foot fowl marks the so-called "wild goose capital of the world."

The oldest bar in Missouri is hidden within a limestone brewery cellar more than 50 feet underground.

The crumbling remains of the first Black-owned and operated hospital in Kansas City.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

Erosion and time have created a naturally-formed water park.

In the St. Francois Mountains in the Ozarks at 1,772 feet above sea level, Taum Sauk Mountain is the highest (and possibly oldest) peak in Missouri.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

If there's another drive-through golf-cart bar in a bat-filled cave on top of a mountain, we don't know about it.

This charming woodland trail is peppered with poetry.

An ancient glacial pothole waterfall in the heart of the Green Mountains.

Driftwood dinosaurs lurk within trees covered in a rainbow array of avian abodes.

This unusual building straddles two countries.

The remains of a deserted 1800s farming community can be found in Little River State Park.

Industrial ruin decimated this tiny New England company town in a fashion no one saw coming… and even fewer remember today.

The highest peak in the state of Vermont has some interesting features.

This New England covered bridge is home to the tale of a jilted lover known to haunt the area.

This cavernous abandoned marble mine is popular with ice skaters in the winter.

The "original web site," this farm in Northern Vermont encourages orb-weaver spiders to build their daily webs, and then sells the preserved masterpieces.