Twenty-year effort to raise a castle using tools and techniques from the 13th century is now abandoned in the Arkansas woods.

A former chicken restaurant that doubled as a speakeasy is now a quirky home full of wonderfully strange traditions.

This abandoned, windowless concrete block is one of the strangest buildings in Tulsa.

Sid Vicious famously punched a hole in the wall of this iconic music venue.

An acoustic anomaly with a mysterious cause.

A museum packed with instruments, lyrics, and other mementos of the American folk icon.

The collection is housed in an exquisite mansion that makes you feel like you've been transported to an Italian villa.

Songwriter Leon Russell transformed this church into a recording studio used by many legendary musicians.

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.

An outsider art studio that created a piece of work so popular they had to turn mainstream.

A peaceful place in the woods where everything is a work in progress.

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

The Ozarks' strangest dwelling.

A detached cement mixer has been transformed to resemble a relic from some obscure NASA mission to Oklahoma.

The show pony of cave systems, Fantastic Caverns manages to live up to its name.

Thousands of small machines line the shelves of this personal collection which definitely delivers on its name.