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

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

The United States Capitol's former columns still stand.

A museum dedicated to exhibiting remarkable outsider art.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

One of the oldest anatomical theaters in the U.S. still in use was once the site of an infamous cadaver riot.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

A hidden alley in urban Baltimore is a haven for graffiti artists.

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

A Rodeo for Prisoners.

A 19th-century shrine covered with prosthetic body parts as votive offerings.

World's largest precision optical instrument used to detect Einstein's elusive gravity waves.

The watery grave of an impractical idea.

An amazing collection of sculptures and art.

An old soap company building now houses one of Minneapolis’s oldest independent non-profit art galleries.

A museum within a museum, devoted to history's most questionable medical devices.

A hands-on traveling collection of the innovative devices of yesteryear.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."