July 28 Biblioteka (Day 305)
Nearby our Airbnb is an interesting green hued building with a rooftop garden. The front is covered with huge panels with writing of different languages, musical scores and mathematical and scientific computations. (A screenshot from the internet)
This is the Biblioteka Uniwersytecka W Warszawie, the University of Warsaw Library. It was built in 1999 and the garden on the rooftop is open to the public, so we went to visit.