Past Visions: penned by Frederick William IV is a lovely visualization of hist historical sketches and doodles. The visualization has a rich prospect view where you see miniatures of all the sketches arranged over time. You can pan in and out or use the keywords to see subsets. There is information available about each sketch (in German.)
This visualization was developed by the research project VIKUS – Visualising Cultural Collections at the University of Applied Sciences Potsdam. Thanks to Johanna for introducing it to us.