Less a museum than a bizarre fantasy world created by artists and engineers.

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

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

France's most famous cemetery, with some of its most curious tombs.

A crumbling hospital from the 1850s on Roosevelt Island.

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

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

A hot dog stand where the heads are just as hot as the dogs.

Home to a protest movement, a bombing, and a dramatic change in labor history.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A hollow cement depiction of time's inexorable effect on the human body.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

An enormous park-like oasis, full of famous Chicagoans’ graves.

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

The subtle science of a master molecular gastronomist.

A science teacher's dream.

A bizarre house filled with an astounding array of collections.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.