Board Thread:Question and Answer/@comment-31266538-20170607172807/@comment-16682378-20170607231646

What you wanna do is:
 * clear a large area from buildings (like equal to half a kingdom or bigger)
 * spam Decorations (Obelisks, Girl Stone Pillars, Relaxation Ponds are the best, depending on how much extra time/space you have - see Buildings for a Exp per Resource spent comparison)
 * delete the Decorations & repeat.
 * this will burn off resources & earn you some Exp at the same time - meaning you can gain more resources & Exp from harvesting the resource buildings.

Another option is to constantly upgrading & cancel the build for a useless building (i.e. Parliment)