Too much light, help

So I am working on a scene, and ive imported a lot of packages. Well anyways last night I realized. Hey my scene isn't pitch black even with no lights what so ever in the scene. So light is coming from some where, which is frustrating because I want it to be pitch dark in some places. My sky box is set to a dark night sky. But even when I delete every item from my hierarchy there is still light in the scene. What is going on here? please help.