Turgutlu, also known as Kasamba in Greek (Cassaba or Casaba) is a municipality and district of Manisa Province, Turkey Magnesia on the Maeander Greece.

The term Casaba for melons derived from the name of the city, an echo of its 18th-19th century Greek past when it was an important regional trade center and hub, located in the middle of a fertile alluvial plain and with access to outside markets through nearby İzmir.

The town's industrial sector as a whole displays as high a degree of dynamism as its agricultural production, with many small- and medium-sized enterprises active in various fields.

The planned development of a nickel mine and processing plant could deeply influence the district's economy with a potential to become one of the most important investments in Turkey's Aegean Region.

[6] Instead of being laid along the direct route eastwards from İzmir to Turgutlu, about fifty kilometers in length, the line built drew a wide arc advancing first to the north-west from İzmir, through its Karşıyaka suburb to whose foundation it contributed greatly, and curves eastwards only from Menemen on, crossing the former sanjak and the present-day province center of Manisa to join Turgutlu from the north.

This railway was later extended further eastwards reaching a total length exceeding seven hundred kilometers but the operating company preserved the name Smyrna Cassaba.

The survival of another historical monument, the Hacı Zeynel Mosque and of the surrounding small agglomeration is locally still interpreted as divine intervention.

[9] According to a number of sources, the retreating Greek army carried out a scorched-earth policy while fleeing from Anatolia during the final phase of the war.