The amount of _stuff_ crammed into each little city is almost unbelievable. Drawbridges open and close, glowing lines sketch patterns, camels walk across a tiny desert. Buildings fade into existence and then burst in a shower of sparks. Flags fly, smoke drifts, buckets cause ripples as they dip into underground pools. The city made of plumbing has tiny people in the bathtubs! There's a freakin' roller coaster with moving cars and a ferris wheel!
I absolutely understand the AI hate that's being commented here, but... in this instance, I just can't feel it. I keep finding more and more little details every time I click on a city, and I am astounded. I just now noticed there's a little guy in the city of strings hanging up new strings at the top of the hill. Damn. My favorite is Marozia, where dark buildings open like treasure chests and release shining towers and flocks of glowing birds.
Yes, there are also a lot of stupid AI errors - every spoked wheel has the spokes off-center for example. But holy crap, I just can't hate this. I don't care about who built it or the random bits of jank - this thing is _beautiful_ in a way that I haven't seen from AI before, and it warms my old GPU-powered heart.