The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

A wondrous old library overlooking the nation's capital.

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

What appears to be a wizard's lair in Milwaukee actually houses a massive water pipe.

A museum celebrating the self-taught artist-environment builder.

The only Frank Lloyd Wright-designed structure in the architect's hometown.

The preserved remains of the former Milwaukee County Hospital for the Insane are hidden in the wooded grounds of County Park.

Three playfully immersive mini golf courses let you travel alongside your ball to the cup at this facility, which has been around since the 1950s.

Every winter, dozens of otherworldly ice structures sprout up from a rigged up artesian well.

The world's largest talking cow would like to tell you about the benefits of 100% Wisconsin dairy products, if only she still could.

This forgotten beach house built to look like a Frank Lloyd Wright masterpiece overlooks a hidden beach.

A large sculptural artwork and garden in Escondido, California.

This airfield is home to a number of retired vintage planes in various states of disrepair.

So many migrating birds roost on the bridge, it has a special summer speed limit.

An annual celebration of the region's successful elk reintroduction program.

The Cadillac Ranch for monster truck aficionados.

Traditional Appalachian dances such as the Georgia Rang Tang and the Shoo-Fly Swing are kept alive at this weekly event.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

Art Deco urban decay at this historical building.

A six-foot pair of socks hangs from a drawer of the world's largest bureau.

This abandoned lighthouse looks like a rusting oil rig, but has managed to survive a number of storms.

This nine-story building can be played like an instrument.