The Vilayet of Aidin or Aydin also known as Vilayet of Smyrna or Izmir after its administrative centre, was a first-level administrative division (vilayet) of the Ottoman Empire in the south-west of Asia Minor, including the ancient regions of Lydia, Ionia, Caria and western Lycia. It was described by the 1911 Encyclopædia Britannica as the "richest and most productive province of Asiatic Turkey".
The Aidin Vilayet in 1894
Lydia was an Iron Age kingdom situated in the west of Asia Minor, in modern-day Turkey. The ethnic group inhabiting this kingdom are known as the Lydians, and their language as Lydian and their capital was Sardis.
Portrait of Croesus, last King of Lydia, Attic red-figure amphora, painted ca. 500–490 BC.