We've already got one. In the EP 2 trailer,
EP 2 MINOR SPOILER
when Flash Gordon's ship flies down thru the canyon, in the background there's an evil, menacing, looking castle with creepy, evil spires and what not. Just imagine it at night, OOH! Scary!
(mod note - Please be careful of spoilers, even if they're from the trailer, in non-spoiler sections - JT)