We have a 10'x10' concret patio right outside the front door. I'm not sure if it's cable-tensioned or just poured concrete. I think it's just poured. I've been wanting it replaced with a nice pavestone patio someday. Maybe I could rip out the cement patio, put in a shelter, then have the pavestones placed over it...
My first choice is still the monolithic dome. Those things are amazing. Downside is finding an area around here that would 1) be rural enough to let me build it and 2) be urban enough for the DW.

Her suggestion was a dome for me and a nice townhouse for her.
-Blast