Nothing quite like the simultaneous awe and dread of looking at a construction so gargantuan that you feel like an ant on the floor of a cathedral
Pic is by Étienne-Louis Boullée. Also if you're into this kind of stuff, check out the work of Giovanni Battista Piranesi. Also have a look at the short film The Centrifuge Brain Project.
Fan Wennan does basically this but for socialist realism
(I had one more I wanted to post but it seems like I hit some kind of rate-limit and it's not expiring after a few minutes of waiting, so I'll just link it: https://www.artstation.com/artwork/g8qe0x)
Nice, an intersection of two of my favorite things!