This oasis-like spring in the Sonoran Desert is home to unique, endangered species.

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Ancient cliffs resembling a kilt on Scotland’s second-largest island emit an entrancing sound.

The decor of this Hollywood movie palace just barely predated the opening of King Tut's tomb.

A few iconic structures are all that remain of America’s first outdoor shopping mall.

The blinking light atop the iconic landmark has been sending secret messages for decades.

This Chase branch is an homage to Old Hollywood.

Britain's only herd of free-ranging reindeer.

A mysterious monument where a woman who records say never existed was burnt alive for being a witch.

This Scottish museum is the only one in the world to focus not on one religion but all of them.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

A close look reveals that the Scottish monument is just slightly off-kilter.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

The site of Paul Revere's historic two lantern warning.

Narrowest house in Boston.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

Three prestigious academic collections come together to create a world-class natural history museum.