I understand that some won't know what gasholders are/were.
Back when domestic gas was cooked from coal, the gas was stored in vast, domed containers, which rose up, under gas pressure, within these skeletal frames.
Then in the evening, when demand for gas was high, these containers sank back, providing gas pressure to the town's kitchens.
Most towns/city districts had them. Usually, 'Town gas' was produced by municipal authorities.
This, in turn, funded many splendid UK Town/City Halls.

@strum there was a cricket ground somewhere in the UK with them nearby. When televised, over the course of a Test Match, you could see them going up and down