Am I alone?

I think of my Map as a unique work of art, but maybe I am deluding myself. Some people have compared me to Henry Darger. I'd rather not be lumped with someone who clearly had some faulty wiring. My wiring is intact (self-diagnosed) though the circuits may be complicated.

Am I alone? Do you know of other artists who have basically spent their entire adult years creating a single never-ending work? Made a highly detailed, open-edged, 2000 square foot painting? Shown this work in its entirety only twice in his/its life?