A marvel of Byzantine engineering under the streets of Istanbul.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

1513 Turkish world map, full of European state secrets and snarky commentary.

This old cement mine has been used as everything from a mushroom farm to a recording studio.

The real faces of Venice beach captured on Romanesque columns.

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.

This California eatery has made a name for itself by embracing Asia's rich history of eating bugs.

Stroll the grounds built by murder, suicide, and dirty oil money at one of Hollywood's most filmed mansions.

A multimedia experience that chronicles the atrocities of racism.

The private clubhouse for the members of the Academy of Magical Arts.

World-famous, Pink's still manages to keep its prized cult fetish status.

High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

Hiding amid the largest camellia collection in the country lies a charming children's maze, donated by a secret admirer.

The legendary building that needed ghostly approval before being built.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

Arcadia is home to a haven for nature geeks and 80s TV lovers alike.

A massive volcanic plug is now a protected area that hosts a number of bird species.

These aggressively sustainable art homes look like something out of 1970's science fiction.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

This popular pilgrimage site offers a hole filled with holy healing dirt.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

An abstract monument to a symphonic composer.

A subterranean house of worship carved right out of the bedrock.