Denmark’s oldest bakery is home to the 'Wednesday Snail,' one of the best cinnamon rolls on the planet.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

The ruins of a prehistoric village hide on a remote Taiwanese island.

An accidentally hidden library containing the ephemeral history of New York.

A small structure built from used railroad ties honors the short term of America's 20th president.

Rusting away on the edge of New Jersey are the remains of a Cold War missile launch site.

An internationally-recognized dark sky sanctuary lies in northern Nevada, near the Oregon line.

Wander through the Corridor of Wonders in these stunning limestone caverns.