An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

Whale bones, scrimshaw, and sperm oil make up just a part of this comprehensive collection of whaling history.

A millionaire's abandoned swimming pool from the gilded age of one of America's most distinguished families.

An eccentric playboy's astounding natural history collection.

The site of a tragic massacre that spawned a multimedia franchise.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

Once America's longest-manned military fort, now an abandoned hulk.

A bronze monument to the infamous radio broadcast in the real New Jersey town where the fictional Martians crash-landed.

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

The oldest surviving presidential residence in the United States.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

A rare view of a preserved Victorian science museum.

This free, take-a-book shop seems like a trick but isn't.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

This abandoned sea fort has become an accidental bird sanctuary.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

Electronic inventions that resulted in products and systems we use every day are on display in this labor-of-love museum.

A priceless collection of the Nation's cryptologic history.

A haunting exhibit in a wildlife refuge center highlights threatened species and the conservation efforts needed to save them.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.