More than 300,000 historical artifacts from the famous music venue, from Duke Ellington's handwritten score to The Beatles' booking slip.

Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

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

A living archive of urban activism and space reclaimed.

Lie in a hammock where George Washington stood.

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

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

One of only two commuter aerial tramways in the United States.

This disastrous New Jersey safari park saw animal attacks, escapes, and disease before being abandoned.

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

A farm in New Jersey grew a most unusual crop for AT&T's testing purposes.

A unique sculpture park that specializes in the huge and bizarre.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.