National Library of Greece

The National Library of Greece (Greek: Εθνική Βιβλιοθήκη) is situated near the center of city of Athens. It was designed by the Danish architect Theophil Freiherr von Hansen, as part of his famous Trilogy of neo-classical buildings including the Academy of Athens and the original building of the Athens University. It was founded by Ioannis Kapodistrias in 1832.

More information on the Wikipedia page.

The website, in Greek, is.