There's a crumbling old mansion inside the Smithsonian National Zoo.

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

A small triangle of DC grass is the final resting place of one of Sonny and Cher's songs.

This grand gothic brewery has been pumping out suds for over a hundred years.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

Final resting place for the Triangle Shirtwaist fire’s unidentified victims.

A condo complex once housed a boarding school with the 24th U.S. Vice President among its notable alumni.

The final resting place of the Hollywood star who came to a tragic end.

A park full of outsider art, created by college students studying outsider art.

This jail which was in service for over a century is now open for curious visitors.

Featuring the largest CinemaScope screen in Pennsylvania, this drive-in has entertained moviegoers for more than half a century.

This Queens hospital has stood abandoned for almost 20 years after its patients were secretly relocated in the dead of night.

Whether you're up or down, the Elevator Museum is worth a stop.

Snack on a partially gestated duck egg.

An easy to overlook storefront hides some of the most authentic and regionally diverse Chinese food in New York.

One of the last taxidermists in New York City.

A New York warehouse filled with an enormous amount of goods saved from the landfills and donated for creative use.

The oldest Dutch colonial stone house in New York City is a hidden gem on the border of Brooklyn and Queens.

A self-made museum in Queens, New York continues to display the work of a sculptor known for paving his own way.

Offbeat arts organization that hosts exhibitions, events, and explorations.

A retired subway car stands alone in a field in the middle of Queens.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.