Where Would Your Pick Of A New World Be Inspired From?

Something strange and fascinating. It could be a sprawling, dilapidated metropolis with broken streets and a secret underground, a hazy, hilly fantasy full of ruins, rocky caerns and mysteries, a steaming, cursed bog nestled in an enormous forest full of tree villages or even a high tech getaway on an Alien moon in another time and place.

I just want more imagined worlds, more fiction and less reality.