Right at the parking lot of the Rüdersdorf Museum Park, they had a great idea and set up a large display window for limestone opencast mining. I suspect the window was glazed for noise protection as the car park is also an RV park. Unfortunately, the panes are now "blind" or so dirty that you can no longer see through them.
There was probably the same problem at the shop window on the Grüne Kehle a few meters away. There they helped themselves by simply smashing the panes. Great!