Grainau is a municipality in the district of Garmisch-Partenkirchen, in southern Bavaria, Germany. It is located at the foot of the Zugspitze mountain, the tallest mountain in Germany in the sub-mountain range of the Wetterstein Alps which is a branch off the main mountain range it is connected to, the Alps.
Lake Eibsee in Grainau lies at the foot of the Zugspitze surrounded by forest.
Wikipedia https://en.wikipedia.org/wiki/Grainau
Coordinates 47°28'31.156" N 11°1'33.419" E