Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

A cluttered and astounding collection of antiquities and curiosities.

Eighty million natural history specimens call this gargantuan museum home.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

The curios of pharmacist and collector Henry Wellcome.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

An extraordinary library and archive dedicated to the history of the Arctic and Antarctic poles.

Impossibly life-like natural history models created out of glass by a father and son.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

This enormous banquet-themed artwork honors over 1,000 notable women throughout history.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

This old cement mine has been used as everything from a mushroom farm to a recording studio.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

Elevated freight railway turned wildly successful urban park.

The poet's been ambling through these New York woods since 1940.

A hidey-hole sandwiched between cellphone, DVD, and jewelry stores features Tibetan delights.

These lush groves of fan palms rise up like oases out of southern California's Colorado Desert.

Hike amid the palm trees that thrive among Southern California's Indio Hills.

The decaying adobe remains of an old homestead are just off the beaten path in Joshua Tree National Park.