Maybe in the water at the end of a boat ramp when 2 fisherman turnup to launch their boat
On the front deck of a bass boat. Once we put our life jackets on and took a swim. She came up to me and wrapped her legs around me and I felt my cock go in. She used her legs to power the fuck while boats/jet skis went zooming past. It took over ten minutes for us to cum. I don't think anyone ever realized what we were doing. Both times the sex happened during road daylight. Evenings on the boat were a turn off for her as she tends to attract mosquitos.
In the hay loft of a barn. Actually many many places in that barn, it's been a special place for a long time.
In the water at the beach (yes there were a few other people nearby, but not so close), under a foot bridge over the creek when I was in high school (at school), lots of places around the woods. At a few festivals. While camping, obviously. I would like to add a few more fun ones to this list. Most require traveling, though.
Out in the desert just before sunrise. With a young teen girl and her mother. And the horses as well.
Many times in the stable here on the farm, on the rocks down at the waterhole. I once had a boyfriend many years ago finger me on a crowded bus after an ACDC concert.
At an outdoor movie on campus.
Great topic. On Jones beach behind a dune; In the pine Barrens while canoeing; In a pool in Puerto Rico (don't recall the hotel); In the wc on a plane flight to europe; Some good times!