The beautiful behemoth is one of the largest trees of its kind in the United States.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

What began as an illegal art installation has become a symbol for unity, ocean awareness, and coastline preservation.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

Along a California highway is a kind of Jurassic Park made of metal.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

The Corinthian columns that towered over Abraham Lincoln’s inauguration stand proud.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

The site where Poe “in great distress, and ... in need of immediate assistance” likely died.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A place to eat for on-the-run agents and espionage enthusiasts.

The sister plane of the C-123 shot down during the Iran-Contra Affair has found a new purpose in retirement.

Wisconsin's most celebrated export gets the royal treatment on I-94.

Restaurant in Northern Wisconsin comes with a unique feature: a grassy roof covered in living goats.

Offering commanding views of the California coastline, this restaurant was a hub for the artists and bohemians of Big Sur.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

A school-themed restaurant where gastronomy is the core curriculum.

Originally a meeting place for foreign correspondents and war reporters, the FCC remains an atmospheric spot for sunset drinks in Phnom Penh.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

Hidden in the Santa Ynez Mountains off Highway 154, this tiny restaurant once served as a stagecoach stop.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

This restaurant offers a side of antiques, curios, and a bathroom chock full of owls.