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

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

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

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

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

A semi-scholarly approach to sex.

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

Tucked in the back of this amazing antique store is an important piece of medical history.

A crumbling hospital from the 1850s on Roosevelt Island.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The oldest lawn bowling club in the United States.

San Francisco’s condensed garden of incredible plant growth.

Perfect your fly fishing technique on their practice ponds.

The legendary statue-hating superintendent of Golden Gate Park is honored with... a statue.

A modest reminder of treacherous waters at the Golden Gate.

Depicting scenes of everyday life - and specific individuals - in Great Depression era San Francisco.

These subterranean storage areas hold emergency water reserves.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

Over 315,000 preserved amphibians and reptiles in jars.

A famous alternative culture epicenter and where Joplin serenaded young hippies.