Order scoops of pandan, lychee, and black sesame at this family-run institution.

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

Try not to get slimed in Tribeca.

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

A terrific purveyor of natural history objects and curios.

Also known as the Founding Church of Scientology.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

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

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Washington's iconic carousel has a nice piece of Civil Rights history.

The first presidential bomb shelter was located in an old vault under the Treasury, connected to the White House via tunnel.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

It was once the base for a series of domestic terror attacks.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

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

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

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.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

A tiny piece of the Moon is embedded in this stained glass masterpiece.