"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

A perfectly preserved abandoned criminal asylum in South Australia.

This centuries-old wooden wonder was built in less than a year and is one of Europe's largest timber-framed churches.

The sole surviving relic of the San Francisco neighborhood cobbled together from old horsecars and streetcars.

You won't find these curiously named passageways anywhere else in England.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

A uniquely lettered street sign marks the corner where the iconic word game was invented.

A Museum of Holography frozen in 1974.

Medical museum focused on antique anesthesiology equipment.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.