Darlington campus isn't that bad either. For me, who really only has to walk through it twice a day, it has fairly nice scenery. That nice little field that's next to the Microbiology building is fairly aesthetic, and the Wentworth Building is nice too. Redfern is quite a quaint area to walk through too.
But yes, why are we comparing the aesthetics and architecture of UTS to USyd? There's no comparison to be made, USyd dominates. And the sanstone buildings aren't the limit to their lovely looking buildings. The entire lot of buildings along Science Road, along with the Physics building and Education buildings are fine pieces of architecture in themselves.