Later on during my run I took another pic, this time showing some old gasometers (not sure if they're even still in use, but I suspect not) with dramatic sunlight. This one should be titled something like "Solar Eclipses Gas" or "Solar Leaves Gas in the Shade".
@Aatheus I remember seeing them at different heights when I was young, but that was back in the 1970s/80s and it's a very different world now. Hopefully the whole concept of burning hydrocarbons will soon be a historical mistake that we've moved on from.
The buildings actually rose and fell within the frame as they filled up with gas...and then emptied as it was burned. Very simple mechanical system, replaced by pressurized pipelines
@Aatheus Yep, they are basically like a bell jar upside down in a circular trough of liquid, to seal it. The weight of the jar maintains the pressure in the gas pipes.