Where Kevin Eastman and Peter Laird created their "heroes in a half shell" and founded Mirage Studios.

Seriously good slices of Sicilian pizza lurk at the back of the Bronx's oldest enclosed market.

The famous author's cottage hideaway.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

At 207 feet, one of the world's longest continuous escalators.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

The oldest continuously operating fish market in the United States.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

Go take a picture with the inventor of the daguerreotype photographic process.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

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

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

One artist’s scheme to expand museum viewing hours into the evening led to the illumination of an entire city.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

America's first nuclear-powered merchant ship is now a time warp to the atomic age.

Ship skeletons haunt Baltimore's waterways.