The main seat of the Utrecht public library is 132 years old and used to be a postal office.

I really love the architecture, the main hall always impresses me whenever I visit.

This is the vantage point from where I took the photo, helpfully highlighted by the halo :)

Edit: I’m an idiot who can’t read critically. The institute of the Utrecht library is 132 years old. The old post office building is exactly 100 years old.
Sorry for giving the wrong information.