U see too much horror movies and western media that influence you subconsciously to think of things like: A church w/ dark theme = vampire/zombies/ghost/evil presence.
In reality, if u ever been to a mosque, u would find tons of ppl there praying and there is a sense of peace. And in mosque (most) u will always find at least few praying there. Even if it is at 4 am in the morning.
It is the only religion where ALL ppl pray in all mosque around the world at all times.