The following happened last summer in my own street and I have not been able to explain it other than that I peered in an other dimension.

We live in the street for over 15 years now, so we know the skyline. But it was just this skyline that was temporarily changed.

As stated it was last summer, and I walked from the beginning of our street to our home, when suddenly I saw the wicks of an electricity generating windmill towering above an multi story school building and happily going around. My first thought was, strange I did not see a inquiry for a license application for that windmill, and I have not see any construction work for such a windmill, but in the other hand it is good for the environment and for the appearance of our neighborhood.

When I got closer the school building took the windmill out of my line of sight.

But the strange thing is, I haven't seen the windmill anymore. There is no windmill in our neighborhood...

And the one I saw was a big one, so not a temporary one or an anemometer on top of a mobile crane..

Like I said my only explanation is that I somehow peered in an other dimension temporarily.