This former POW camp was transformed into a Cold War missile installation.

Curious onlookers have suspected this strange structure is a secret government base.

The largest collection of model trains in the world is actually run using full-size locomotive technology.

Coast along one of Japan’s mountain railways for coveted views of magnificent hydrangeas.

Museum showcases Japanese sexuality and some amazing ocean views.

A small island with no monkeys but plenty of military ruins.

The last remaining predreadnought battleship in the world has been a museum for nearly a century.

The overgrown ruins of a once thriving World War I-era copper mine.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

Not truly a ship nor a building, the Navy's first and last "landship" is now abandoned due to clerical issues.

An inconspicuous suburban street corner is the site of San Diego's worst air disaster.

An inconspicuous footbridge beloved by San Diego locals.

North America's largest accredited model railroad museum.

Far from the shore, this sandy victim of the Skeleton Coast looks like it was plopped in the middle of the desert.

Remnants of an exploded schooner and wrecked submarines form a breakwater.

This partially buried wreck is one of the most complete of its kind but is only revealed when the sea allows.

The oldest steel ship in Iceland has been beached for years and is now a rusting ruin.

The rusted hull of a WWII German destroyer pokes above the surface in a Norwegian fjord.

This wrecked ghost ship has been rusting on a Greek beach since the 1980s.

These massive concrete balls were used to mine gold in Virginia.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

This cemetery is all that remains of a school for "wayward" girls.

This small, but long-running hobby club has built one of the largest model rail lines in the US.

Hot Doug's "Hot Dog" Stand.