A massive sustainable farm designed by the mastermind behind Central Park.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

The final resting place of 121 victims of the RMS Titanic, 42 of which may never be identified.

The highest tides in the world come in and out here twice a day, allowing you to essentially walk along the ocean floor.

Cliffs that hold fossils, including the earliest known reptile, dating back more than 300 million years.

Explore the dark underground corridors of this graffiti-covered former military fortification.

This elaborate towering structure was once famed for its revolutionary height.

Where America's first doomsday cult awaited the end of the world.

A rare view of a preserved Victorian science museum.

World's first "penitentiary," meant to be humane, drove men insane.

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

A scenic fort on the harbor protected Philadelphia from an attack that never came.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

This collection of odd proofs of concept is like taking a walk through the imagination of a Victorian engineer.

A lone tower rises above the cliffs in a city park, offering fantastic views of the Connecticut landscape.

Ruins of a historic medical facility sits eerily by the water.

The ruins of an abandoned 18th-century town that is slowly being reclaimed by the forest.

A former copper mine which became a truly unsuccessful prison.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

The intriguing personal collection of a professional demon-chaser.

A wunderkammer hidden on the top floor of the Hartford statehouse.

An archival collection of over 2,200 case studies which includes human brain specimens and tumor specimens.

A desiccated merman and a walrus penis bone are among the oddities in this eclectic collection of shipwreck treasures.