Athens. Greece. View of the one (North) of the two Auditoria’s which were on the situated on the eastern side of Roman Emperor Hadrian’s Library built in 131 AD in Athens. The Auditoria were small rooms used for lectures and text reading. The library complex consisted of a vast library, a large courtyard with a garden and central pool, mosaics floors, numerous rooms and a facade adorned with Corinthian columns.