Situated as it is on a series of hot springs, Wiesbaden's rain drainage system literally steams in cool weather.
Some joker (not me) had the bright idea to leave an orange rind right in the middle of this manhole cover.
6000+ comments, mostly saying things like "Yeah! Great idea!"
Not many pointing out it's been tried before. It hasn't always worked like they thought it would (e.g. the Oneida Community).
But hey, go for it.
Maybe it'll be different when *you* try it.