I admit I am a big book lover and I love libraries, so I check them out wherever I can. The library of the Giga Institute (they do Global and Area Studies) is exceptional because it is situated just in the posh city center and it contains some lovely retro details I wanna share with you.
The building is quite old so you should try the staircases. I love the ones that bring you to the wash rooms if you are on the second floor. And there are the beautiful cabinets on the second floor as well which are out of order in many newer libraries around the world. So I like the good old feeling that I get when I see these old gems.