This small New York museum celebrates the mountainous artwork of a Russian mystic.

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

Phil Mortillaro uses keys to bring art back to the Village.

A staggering collection of photographs depicting medical, social, and historical change.

Commemorating the spot where the famous scientist fed his pigeons.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

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

New York City's only preserved family home from the 19th century.

Lie in a hammock where George Washington stood.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

A playground inspired by differential calculus dangles from the ceiling of the Liberty Science Center.

Yo, Adrian!

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

This free, take-a-book shop seems like a trick but isn't.

A celebration of capitalism in Midtown.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

Peek through the gates at this oasis from the city, full of Old English charm.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

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

Try not to get slimed in Tribeca.

Elevated freight railway turned wildly successful urban park.

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