Drawing of the inside of a cylinder.
That's usually bad enough. Then try to specify size, and specify things you want to place inside the cylinder relative to the specified size.
(e.g. try to approximate an O'Neill cylinder)
I love generative AI models, but they're really bad at that, and this one is no exception, but the speed makes playing around with prompt variations to try to see if I get somewhere a lot easier (I'm not getting anywhere...)