This is an environment from my take on the Divina Commedia book, by Dante Alighieri if it was a game.
The Castle of Spiriti Magni is one of the first places Dante goes to, a place for pagans who distinguished themselves particularly in life but yet, not allowed to go to Paradise. The castle is surrounded by a halo of light, seven of walls and water. In my take, the place gets colder the closer you get to the ground, the castle floats and is reachable only by a sort of cable-car/cage.
The castle is full of merchants and a rest area, the player can visit the place to purchase all kinds of stuff, and to speak to the souls 'working' there (ex: Homer acting as a blacksmith, selling the weapons of the books he wrote like the Odyssey).