You can say the same about forests and what not. Woo, same old green tree mold. Wow, another pine tree. Just endless, endless variations of the same leafy green thing.
This might sound lame as ever, but I honestly feel a spiritual connection with the trees and the rocks. Not the ones in boxed-off parks though. Also, I never get tired of waterfalls. Waterfalls are instantly peace-inducing.
Buildings in most cities have no aura, for me at least.
if you like waterfalls, get a job where you spend time in a server room.
Hungry black bears have a pretty neat aura as well.
We are getting off the interesting point, namely, that people do better on certain tests of concentration after spending time with green tree mold, pine trees, etc, than they do after spending time with concrete, cars, etc.