This is near me and i don't know whats that.
I hope somewone has a idee :-)

..................and the conspiracies widen:

Well it looks like a blue ball or satelliate artifact or simply government trying to alter something

Maybe its Mr. Alien's lost blue doughnut

Did anyone check out that place in iraq triangular in shape, an airport with distortion in runway image and green coating on various cement structures??

Could it be a hot air balloon?

It can't be a pool or air baloon

Well, obviously cant be a pool, as I have never seen a pool floating above tree's before.

I have added yours to the same kind of blue circle in Schwatach.

I also found a similar circular blue object nearby in Schaftnacht.

See THIS POSTING