A living archive of urban activism and space reclaimed.

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

This abandoned subway station can still be seen on regular commuter trips.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

Unique antiquarian shop specializing in globes, maps, and prints.

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

Become a prohibition rebel.

A dilapidated dock tells the story of Titanic's missed arrival.

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

A miniature rainforest is growing inside of a Midtown Manhattan office building.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

Try not to get slimed in Tribeca.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Hidden within an idyllic suburban garden is a memorial dedicated to the victims of a terrifying spree of killings committed on U.S. soil.

This statue honors the author's groundbreaking family story.

This mighty white oak in Bethesda survived both the American Revolution and the construction of Washington D.C.'s metro red line.

This building at the south end of the boardwalk was once home to the U.S. Life-Saving Service and the U.S. Coast Guard before being rescued itself.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

The rooster who crossed the road lives on forever in Takoma Park, Maryland.

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

A lawn full of retired spacecraft on display at one of NASA's first research labs.

This one-room cabin where the young colonel slept during the French and Indian War.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.