Here is what they have done in Vienna to some gasometers which were no longer needed. Impressive. In England they'd just pull them down and probably put up another Tescos.

And here's a picture of some unreconstructed gasometers - and you see what Gus Allen meant. "For mountains they would very nicely pass."

(And I've always called them gasometers, bert, including the ones down the hill from where I grew up.)