Collapsing castle on the Hudson river was once the storage site of military surplus business.

Ride the subways of yesteryear.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

This stained glass window designed by Tiffany Studios is hidden behind the circulation desk of a public library.

A castle built for love, and abandoned due to heartbreak.

A crumbling hospital from the 1850s on Roosevelt Island.

A parade of antique steeds offers a quirky ride through history.

This last stalwart of the now-forgotten feminist restaurant movement has been serving food in an activist atmosphere since 1977.

With some 500,000 books across five buildings, this bookstore is a reader's paradise.

This small-town Connecticut restaurant gives each diner a free book from its vast library.

The intriguing personal collection of a professional demon-chaser.

A beautiful, creepy 19th-century castle stands incongruous in rural Vermont.

Beautiful hillside Vermont cemetery with amazing funerary art.

The gravestones in this historic cemetery are carved with mysterious faces.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.