Başakşehir
Başakşehir is municipality and district of Istanbul Province, Turkey. Its area is 107 km2, and its population is 514,900 (2022). It is in the European part of Istanbul. History 
Former name of the area was Azatlık. The area specialized in providing gunpowder to the Ottoman army. Later a farm was established in place of Azatlık; the farm was known as Resneli farm referring to Resneli Niyazi, a military officer from Resen, North Macedonia (then a part of Ottoman Empire), who was a hero of Young Turk Revolution in 1908. In 2008 the district Başakşehir was created from parts of the districts Küçükçekmece, Esenler and Büyükçekmece. The urban part of the new district, 10 neighbourhoods, was established as a municipality. At the 2013 Turkish local government reorganisation, the rural part of the district was integrated into the municipality, the villages becoming neighbourhoods. Geography 
Başakşehir is situated in the European portion (Rumeli) of İstanbul. Sazlıdere Dam reservoir is to the northwest and Sea of Marmara is to the south. It is surrounded by other second-level districts of Istanbul, such as Eyüpsultan, Sultangazi, Esenler, Bağcılar, Küçükçekmece, Avcılar, Esenyurt and Arnavutköy. (Istanbul is one of the 30 metropolitan centers in Turkey with more than one municipality within city borders.) The Motorway O.3 (European route E80) starts at Mahmutbey in Başakşehir, and runs through the district in west direction to Edirne. Composition
There are 10 neighbourhoods in Başakşehir District:

 Altınşehir
 Bahçeşehir 1. Kısım
 Bahçeşehir 2. Kısım
 Başak
 Başakşehir
 Güvercintepe
 Kayabaşı
 Şahintepesi
 Şamlar
 Ziya Gökalp

Climate 
Başakşehir experiences a relatively cool Mediterranean climate (Csa/Cs) according to both Köppen and Trewartha climate classifications, with cool winters and warm to hot summers. It is in USDA hardiness zone 9a and AHS heat zone 4.

Notable buildings 
 Atatürk Olympic Stadium
 Başakşehir Fatih Terim Stadium

References 

 
Populated places in Istanbul Province
Metropolitan district municipalities in Turkey
Districts of Istanbul Province