A vast and unlikely aviation museum kept alive for over 50 years due to one man's tenacity.

This impressively complicated radioastronomy research center was once a tool of Soviet spies.

A top secret Cold War bunker hidden beneath a Latvian spa facility is now open for tours.

Medical museum that houses most notably the taxidermied remains of Vladimir Demikhov's famous two-headed dog experiment.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

Elevated freight railway turned wildly successful urban park.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

An early-19th-century hotel with a past that is steeped in the Civil War.

The first public building in Savannah to offer air conditioning was a luxurious cinema that still operates today.

This monster board rode a monster wave to break two world records.

This midcentury LA bar was the birthplace of tiki culture.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

This former textile district now is now a thriving center for contemporary Chinese art.

This Japanese treats shop may have been the first business to mass-produce fortune cookies in the United States.

The best place in the park to test out your throwing arm.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A large visitor's complex and place of remembrance on the outskirts of the DMZ.

The site of many tense prisoner exchanges across the Military Demarcation Line between North and South Korea.

Secret North Korean passage discovered below the world's most dangerous border.

The best place for scenic views of the DMZ and North Korea.