Little Red Lighthouse under the George Washington Bridge.

Lie in a hammock where George Washington stood.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

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

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

A bit of retro transportation flair preserved in the world's largest department store.

Wine bottle sculpture with a ship's stateroom inside.

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

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

Read a book next to a Midtown waterfall.

A semi-scholarly approach to sex.

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

True to its name, this bouncy walkway may be the world’s smallest suspension bridge.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

An Aztec snake god has taken the material form of an apartment complex.

Site of a former hidden treehouse in New Orleans.

The world's only museum devoted to the wonders of fluorescence.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

Mysterious rocks that ring musically when struck.

A trash dump made beautiful by nature's power.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.