Does it have to be penetration sex? If so, it would be on railroad tracks behind a tennis court in the neighborhood I lived in during HS. Just having an orgasm w/o penetration...Rolling Stones concert.
I don't have anywhere too exciting. Old boyfriend lived in a big apartment complex on LSD downtown. We did it up on the rooftop deck. Soon after we were done some people came up. It was a good thrill!
I'm not a newbie, and I may have posted this already, but some folks seemed to find it humorous that DW and I have satisfied each other while waiting in the doctor's office.
We went to a camping show one year, and broke in a new camper on display.
The flower show was also memorable, as was the night on the mall in Washington DC.
Planes, trains, automobiles. The church confessional immediately following an old friend's wedding.
Then there was the time we ran into an Ace Hardware store because she told me she needed a good screw.
For years, we used to say that the cemetary was really the strangest place we had nookie. That was until we went to the funeral home - on the day we bought our prepaid funeral plans, the director got a phone call, apologized and asked if we wouldn't mind waiting ten minutes for him to return. Our parlor was completely empty except for flowers and a double width coffin...