The University and the National Library. Left of the Academy, you can find the building of the University of Athens. The building of Athens’ University was built in the period 1839-1864 by the Danish architect Hans Christian Hansen. The frescoes were painted by the German Karl Rahl. Next to the University is the National Library. This library is the largest of Greece and was designed in the period 1887-1902 by Theofil Hansen.