I ran into this short story in a Tale Foundry video about hellscapes. Truly it wouldn't be at all out of place in the SCP Foundation. I really do love the evocative language with words like encrimsoning and malodorous. I feel like watching the video gave me the cheat code for actually understanding the story and why it exists.
[My paraphrasing of Tale Foundry describing the Red Tower]
Generally, other mechanical hellscapes are clearly of human design. We set the machines in motion one day and we— through our mortal mistakes and flaws — set them free. However, the Red tower seems to break this pattern. It is a "version of hell, where there was never a soul to begin with". It seems to exist completely independent of us, creating things of no use to us, for reasons beyond us. And yet, the narrator explains, "Everywhere I go people are talking about it. It doesn't matter what they're saying. The red tower is embedded in their speech, their thought...". We still are the creators of this hellscape in the end, through rumors and through our imaginations. "It is an absurdity dreamt into reality by the only creatures capable of it. They are collectively imagining the worst possible hell there is".