Mental Floss has a great list of impossible insane architectural designs developed by the Soviet Union.
The architecture doesn’t make a lot of sense, but I guess that could also be said about some American designs that are beloved as well such as the Statue of Liberty. (And I still don’t have an intellectual handle on the World’s Largest Ball of Twine which I’m going to have to get back to you on.)
Things on the list, the world’s largest Hydrofoil which isn’t a hydrofoil at all, The Palace of Soviets, pictured at the right which was never finished, which I think was developed when Joseph Stalin just had a moment and, of course, an old Cold War favorite, the world’s largest hydrogen bomb. Yeah, I’m thinking Dr. Strangelove too.
The key is that these designs, some fulfilled and others not, mainly come from a time when there was a need for the Soviet Union to show some innate need that they were a powerhouse in the world.
And how better to do that then build it.
Remember the Pyramids. Same concept.