This hollow steel globe is the second-largest in the world.

A mini-Stonehenge in the corner of the North Carolina state capitol grounds.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

Born from segregation and exclusion, Durham’s Black Wall Street is now a living reminder of the city’s past

A lovingly created and maintained collection of decorative gourd art.

A vibrant, 100-foot-tall mural dedicated to Evelyn Nesbit, the tragic icon of the Gilded Age.

An artist's cute bronze subway sculptures belie his violent artistic past.

Cryptic messages embedded in the New York City sidewalk.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

Twenty-three trees, each paired with a basalt stone, line a street in Chelsea, continuing an urban project started by German Fluxus artist Joseph Beuys.

Manhattan's deadly West Side railroad, which killed hundreds of New Yorkers, is remembered by this simple plaque.

The former hotel where Tesla invented the radio.

The one-time epicenter of American songwriting is now a little remembered Manhattan commercial block.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

There are owls with glowing eyes in Herald Square.

Everyone from Mark Twain to Teddy Roosevelt has a pipe hanging from the walls of this historic chophouse.

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

The former home of the reclusive "Weird Wendels" who dominated New York real estate a century before Donald Trump.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

From this desk Al Hirschfeld drew his influential caricatures of the 20th century's Broadway stars.