The Library of Celsus is an ancient Roman building in Ephesus, Anatolia, today located near the modern town of Selçuk, in the İzmir Province of western Turkey. The building was commissioned in the years 110s CE by a consul of the Roman Empire, Tiberius Julius Aquila Polemaeanus, as a funerary monument for his father Tiberius Julius Celsus Polemaeanus, former proconsul of Asia, and completed during the reign of the Roman Emperor Hadrian, sometime after Aquila's death.

The Aegean Region is one of the 7 geographical regions of Turkey. The largest city in the region is İzmir. Other big cities are Manisa, Aydın, Denizli, Muğla, Afyonkarahisar and Kütahya.