Craziest place I have had sex must have been either in a church or a graveyard, Long story cut short me and my girlfriend were too bored and sex in public places is such an adrenaline rush!
Assuming you were born in 1995, how could you get bored of usual sex at such a young age? Damn. While I'm not against experimenting (I'm all for it) you'd expect the need to spice up things would come in much later, if that makes sense. But getting plain "bored"? Man.
To reply seriously to the thread, the only time I remember doing it in a place that is considered unusual would be in my ex's house on his rooftop during night time.