6. Area 51
City: 90 Miles North of Vegas, NV
No one knows what's under Area 51, so we can safely assume it's the place where all the evil forces in the world will commence a campaign of utter domination. Speculation? Maybe, yeah. Have any better theories? We're talking about a place that appears on Google Maps as a series of green circles superimposed over untouched desert. Perhaps these are the radioactive lakes we'll all be drowned inside when the genocide begins.