In the early 1900s, influential psychologist Carl Jung spent more than a decade documenting the strange images that popped up in his unconscious mind and documenting them all in a beautiful illustrated manuscript. After his death, his family thought the book was too bizarre to be made public and locked it away in a Swiss bank vault for decades. 

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Learn more about the Jung House Museum (and visit the study where Jung wrote the Red Book) https://www.cgjunghaus.ch/en/

A link to the New York Times article mentioned: https://www.nytimes.com/2009/09/20/magazine/20jung-t.html