Palatino 766 pipes, pools, cliffs, streams... (by Taccola)

[Bluetoes101]

I got a bit "theoristy" initially but dialled it back, but if we are going there..  (you started it!) 

I would also point out the random sky (land) animals. Some look like they may have been drawn randomly, but others have people looking at them so I assume they are part of the whole depiction. It reminded me of our dragon/sheep/armadillo on it's cloud. (I think there's about 5 in total)

   

Also, the way he does hilltops reminded me of the "puzzle root"