The steamy X-rated scene, recorded in the city of Dubrovnik, in the Croatian region of Dalmatia last week, shows a woman bent over by the harbour wall with her dress pulled up over her back while her partner appears to thrust rapidly from behind.
But the action came to an end within a few seconds, as the pair pull apart, the girl flips her dress down and grabs her handbag while the man walks off doing up his flies.
A pedestrian was seen walking along the promenade moments after the couple had finished their public display of affection in the popular tourist destination, which was used as the setting for King’s Landing in Game of Thrones in the hit series.
The site receives millions of visitors every year and locals are reportedly growing outraged by the increase in sexual activity and urinating in the streets.
According to local reports, a number of brazen couples have been spotted performing public sex acts in open spaces, without even seeking the privacy of a secluded area.
The news comes after a pair was spotted romping on top of a multi-storey car park in Birmingham, West Midlands.
The clip, which was shared by @imjustbrum on Twitter, shows the fully-nude Brits seemingly performing the sex act in full view of the office buildings surrounding the council-owned car park near Snow Hill station in Birmingham City Centre.
Temperatures in the area were around 38C when the pair were filmed at around midday on Tuesday (July 19).
The video, which was posted online at around 10pm on Friday (July 22), has since gone viral, racking up more than 163,000 views on Twitter.
People jumped in the comments to poke fun at the couple – with some wondering why one of them appeared to be wearing nothing but a party hat