I love public sex, its either the voyer or swinger side of me So and I have carried it over through all my relationships...
Top of a Dollar Store in a shopping mall (fling)
In a Dollar store, store room during shift and on display counter after close (ex and fling)
in a church restroom before my first wife and I got married - probably a good reason we divorced lol
Apartment complex Pool during a summer day with about 20-30 others in the pool. (SO)
Wrestling ring (SO)
BJs in the car during daytime traffic (SO and our ex girlfriend)
Department store dressing room (SO)
Know there is more but that is all that comes to mind... and after reading some of the other responces there is some I will have to add to my list lol