This sprawling mini-golf empire is an impressive testament to a disappearing attraction.

The maximum security facility was once thought to have "the bloodiest 47 acres in America."

One extremely determined man's homemade universe.

Contrary to popular belief, this memorial does not actually claim to mark the bluesman's grave.

The remains of this visionary community can still be found much as it was a century ago.

Once one of the largest producers of pig iron in the world.

The aggressively banal name of this underground fortress of bureaucracy does little to evoke its truly surreal existence.

A Muppet museum in small-town Mississippi honors the roots of Jim Henson's most beloved creation.

A unique home built by Andrew Jackson Caldwell that also served as a military hospital.

38-story baroque tower reflecting Detroit's rise, fall, and possible rise again.

First known as the "Sample House," this construction mash-up was meant to be a living catalogue of building styles.

Evidence from a brutal 1880s murder is on display at this former infirmary house.