You could even rest in them, but they should NOT be as good as chairs. They're not designed to be comfy, they're designed to show of the ridiculously large chunk of stuff you got.
Diamond encrusted Gold Throne, Gold throne, Gilt throne (lotta wood and a lil gold, but you need a brush or something to put it on), Silver Throne (I think some of the girls would like that for thier matriarchs), Iron Throne (for the hematite egomaniacs we all know and love), Bone Throne (Lotsa large bones, good amount small bones, some hide, sinew ... you know, to make it all creepy)
I can't imagine any reason they need to be able to build them outside, unless there is some "chair" game mechanic that makes them have to. The only reason I can see for anyone wanting them outside is to keep an eye on they town while they rule, and that'll just have to be thier tough time.
I know some of the non-English langs have a hard time getting bones, But there's a long list of throne ideas there. Feel free to add your own, but I doubt Anthony will be adding a "THRONE OF PAPAYAS" in anytime soon.
