yes, public places, never with anyone watching... once (very quietly) on the other side of a concrete wall from a family picnic. Parking garage. Stairwells several times; once totally stripped down, someone came through only moments after we finished dressing (whew!)
yes, at various times and places, never got caught. Once, in a glassed in room about 3 floors up I stripped in plain sight of the street below and then made myself cum leaning against the glass watching the pedestrians below...NOT ONE person looked up!
let me think
once under a bidge in a small town we where traveling through
does a camp ground count? a few times there
we got playing around on a dare one night and did it at a construction site. (couldn't enjoy it because i was scared of getting caught)