Check out Monolithic Domes - Italy TX.
Made with reinforced shotcrete.
https://www.monolithic.org/homes
There’s multi-bubble looking house off the Interstate between San Jose and San Francisco that looks like a case of sublimated ovary envy.
My dream is to retire someday in one of those. It would be the only way I’d move to a state with regular tornado activity.
My late wife was really interested in Monolithic Domes. They seem to be really cool, and would be pretty damned smart to use in places succeptable to fire like northern California.