The oldest continuously operating fish market in the United States.

The national park was once a plantation estate.

There’s a hidden military meme engraved on the World War II Memorial.

The walls of the iconic dome are hollow and have a secret stairway.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

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

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

Home to items never before seen by the public.

The site of the climactic scene from the classic horror film is now a historic landmark.

Huge abstract sculptures of the Puerto Rican Flag.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

Theater has had many different incarnations but has survived the ravages of time.

Partially submerged Buddha heads freckle Chicago’s neighborhoods.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

Where old school Polish Chicago and young hipster Chicago live side by side.

The 606 is a decade in the making.

One of Chicago's last seafood smokehouses perfects a dying breed of fishcraft.

A beloved Chicago music venue offering cold beer and lots of “Friendly."

These pretty kitties killed and ate as many as 135 railway workers.

A hot dog stand where the heads are just as hot as the dogs.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.