Most unique place you have had sex?
I could literally write a book on this one. Over our lifetime we made it a point on finding unusual semi private places to fuck. We're new here and plan on adding many of our own personal true stories. Maybe some ideas will pop for places to fuck your partner.
Here are just two. In a Daytona motel in an outside hot tub full of half drunk Canadian construction workers with a view of the Main St. pier and ocean. Okay nothing special.
Number two in Chicago in the German submarine at the museum. It was doggie and a quickie but we got caught by tourists while I had my periscope up!