The hidden ruins of a mill that is linked to an attempt to assassinate the vice president of the United States.

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

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

The United States Capitol's former columns still stand.

A historic neighborhood church is reborn as a psychedelic arts collective.

A permanent exhibition honors Queen, which recorded seven albums at the casino-based studio, including “Under Pressure” with David Bowie.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

An off-the-beaten-path boutique stuffed with an eclectic collection of upcycled goods.

This frog-themed restaurant was frequented by Picasso, Saint-Exupéry, and more.

Notorious artist squat renovated into legal studios.

Dolls of all shapes and sizes display the eras of femininity in this spooky and beautiful collection.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.