An off-the-beaten-path place to literally hang beneath Milwaukee's Holton Street Bridge.

Five acres of divinely inspired folk art.

A metal ring in the middle of the road marks the exact spot where the Soviet satellite crash-landed in 1962.

The arboretum whose marshy soil sucked up the dreams of housing developers.

This cave holds a surprisingly colorful variety of geological oddities.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

A bizarre house filled with an astounding array of collections.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

Graffiti-covered ruins that were once part of a farm owned by a mental hospital.

Rusty pieces of metal jutting out of a breakwater are all that's visible of the 12,500-ton ocean liner that capsized just off the beach.

Abandoned in 2009, this once popular resort destination now stands frozen in time.

A strange mishmash of ruins and abandoned structures hint at the park's many lives.

The show's fictional Korean medical camp was created in the Santa Monica hills.

Malibu's first beach home features an astonishing trove of ceramic tiles.

Windswept and remote, this island was once the home of a rare mammoth and today is home to a rare tree.

Acres of natural wonders left behind by a socialite-turned-gardener.

One incredible room in the Santa Barbara Courthouse is covered in wall-to-wall canvas murals.

This stunning sea creature-shaped home blends into the landscape like a fantasy villa.

Colorful Native American paintings are hidden within this small cavern.

The unbelievably opulent home built for an infamous newspaperman.

California's oldest wind harp represents a historic piece of America's Danish history.

The abandoned personal amusement park of the King of Pop.

A house built from trash known as the poor man's Hearst Castle.