I'm in Nakhonratchasima (affectionately known as Korat) right now and, other than the town center where the memorial is located, it looks like every other Soviet era, concrete building, mixed industrial and retail, dirty endless rows of 3 storey ugly buildings that I see in every stretch of populated Thailand.
Other than the beautiful wats and a few other exceptions the Thais seem to place little value on urban aesthetics. I think they have no other frame of reference for architecture or urban "planning". Many cities in the American Southwest are suffering under a similar form of homogeneic sprawl so maybe it's just a matter economics and what works.
Anyway, just an observation.