I based this score off of the Mistborn trilogy, by Brandon Sanderson. It's supposed to convey what I think you'd feel while inside Kredik Shaw, also known as the Hill of a Thousand Spires, the castle of the Lord Ruler. A place of darkness, built over what was once a place of good, a place of light and purity. You would have this sense of gloom, of hopelessness, in part due to the strong allomantic field around the castle that literally makes anyone near it all depressed and stuff.