Easy. Any bus station at night. As soon as the sun goes down it gets freaky! Even at school it would be freaky- one reason I started driving if I was going to be out at night. It's just the crazies you meet- and not the fun ones- the ones that threaten to bash your head open just because....(yes that has happened before...)
Although I could have added any camping sites, too. Who knows what's lurking out there in the woods. I had quite a nervous experience the last time I went camping with friends.