When I was a pfc in frankfurt me and the wife went to the carnival, the next day I randomly bought a local newspaper to look at the page two boobs, and there we were, the pic was from behind us as we stood looking at the carnival lights while we were up on the hill overlooking the fairgrounds, the lights of the dippemas were in front of us in the Ost park.
http://www.frankfurt-tourismus.de/en/Discover-Experience/Events/Festivals-in-Frankfurt/Autumn-Dippemess