I think the top of my list is probably on top of a mountain, most likely in a national park. It would quiet, she can scream as loud as she wants, there's obviously no one else around. Think of the pictures you could take!
I want to have sex on top of the Sydney Harbour Bridge! I have never been there and have always wanted to climb it but now more than ever I just want to get up there and have amazing sex! The hard wind blowing, my head dangling over the side and him pounding into me.