Oh, I didn't expect to receive an answer to my "badge" which was in the first sense ment to be a joke.
Since I would welcome to award a badge to the "longest piece", it is a good idea to follow @TristanTheTristan idea about a "Colossos of Prora".
Concerning the icon, it was really just a "joke" of me using a WikiMedia Commons Picture and mashing it together to a "badge icon".
I'll look tomorrow, whether I have some better personal photos from that location or whether I can gather more background about "Prora" before creating such a badge for the YC forum.