Once upon a time, there was a lake and above that lake, there was a lovely green hill. This hill was so beautiful, that I immediately fell in love with this place - old olympic site in Munchen, Germany. At that time, we had a school project called "open air museum". I took the literal meaning of this phrase and invented simple project, how to make a museum under the sky for whole family, for free, for fun and education.

All over the hill I placed clouds made from straw bales covered with white foil and geofabric. Visitors can climb up the clouds and lay there watching the beautiful pictures and figures made from clouds, rainbows, stars and other day and night sky phenomenons. I added a few educational boards with pictures and descriptions of these sky phenomenons, so teachers can take their classes here, too.