It's true! I was crossing Long Bien bridge anyway because I like bridges, and spotted people in the water in the distance, obviously nude. Looking on google maps gave Hanoi Beach for that spot (whereas previous research didn't give an exact location). I took that opportunity to participate (getting nude and going into the water up to my knees; just so I can say I was there and nude and in the water). That was end of February, with daytime temperatures 20-25 C, and there were 8 others (all too old and too fat by my standards for sexual partners). One used to work in Germany long time ago and told me, in German, about his time in the GDR and how he witnessed the wall come down.

View from Long Bien bridge (and easily accessible from the bridge):

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