This here being a look at Mighty Castle Avernus, Home of his Grim Majesty, Azalin Rex, Lich ruler of Darkon.
http://tn3-1.deviantart.com/fs8/300W/i/2005/326/f/4/_lost_castle__by_noah_kh.jpg
http://tn3-1.deviantart.com/fs8/300W/i/2005/326/f/4/_lost_castle__by_noah_kh.jpg