Once the tallest building in the world and the site of “the highest dinner ever held in New York” this building now holds the most expensive penthouse in the city.

An antique store houses the last operational diner from the defunct department store chain.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

European castle ruins in an American state park are actually the product of death and grief.

The world’s largest concentrated solar plant generates as many problems as megawatts.

This mostly abandoned shopping outlet is now adorned with beautiful graffiti and murals.

This simple highway curve has become a comedic pilgrimage site.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

A brooding mansion of clinker brick stands out among the Victorian houses of Pacific Heights.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

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.

A second generation sun-powered marvel lights up the night.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

San Diego's most historic and haunted home.

A UFO scrapyard in the California desert.

This historic tower in the California desert promises visitors a "vortex of good vibes".

This San Diego museum is dedicated to preserving women’s historic achievements.

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

An inconspicuous suburban street corner is the site of San Diego's worst air disaster.

Two groundbreaking brothers from Pasadena.

Where the rich wintered in Pasadena.

A newspaper building that made radio history.