A monument to the art of slicing people open.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

A haunting army of decomposing, moss-covered stuffed animals and dolls guard this swinging truss.

Home to part of the world’s largest private collection of original manuscripts and documents.

The watery grave of an impractical idea.

This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.

This posh mansion began as a family's estate and ended as the site of a murder ripped from the pages of a pulp novel.