This overlooked street light once served as a KGB dead letter box.

There's a piece of New York City transportation history hidden in plain sight at a Manhattan subway stop.

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

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

The front yard of an Upper East Side town house hides the last fragment of one of New York's most famous theatres.

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.