A modern day curiosity cabinet.

Abandoned anti-ballistic missile base.

A chain of bells connect the California Missions and honor the legend of the "King’s Highway."

This quirky roadside attraction dives into the many theories surrounding North America's most infamous hairy cryptid.

A Barbary Coast watering hole built into a Gold Rush shipwreck.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

San Francisco's newly reopened hands-on science museum.

This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

This abandoned boat was left in place thanks to its rotting beauty.

This giant temperature attraction created some giant electric bills.

Finally the worlds of UFO enthusiasts and beef jerky lovers have come together in this roadside shop.

Abandoned Air Force base that has fallen into disrepair.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

This massive redwood tree has a hole in the base big enough to drive through.

Once a place of peaceful repose, this sanitarium now faces an uncertain future.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

A bomb shelter and some fireplaces are all that remain of the house Fred Roberts tried so hard to keep standing.

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

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

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

The American Home, Re-imagined.

Not truly a ship nor a building, the Navy's first and last "landship" is now abandoned due to clerical issues.

From silent movie theater to rock &roll palace and beyond.

Bug-devouring flora are the stars of a special wing of the glass conservatory.