Saat dewasa, ia mengubah namanya menjadi [[Kösem Sultan]] [[Beren Saat]] dan ia membawa banyak perubahan di [[Kesultanan Utsmaniyah]] bersama suaminya, Sultan [[Ahmed I]]<ref>{{cite web |url=http://www.startv.com.tr/dizi/kosem-sultan |title=Kösem Sultan da Star'da! |publisher=Star TV |accessdate=29 May 2015|language=Turkish}}</ref>
Episode-episode pertama dari serial tersebut mengambil latar syuting di [[Chios]], Yunani.<ref>{{cite web|title=Muhteşem Yüzyıl Kösem ne zaman başlıyor?|url=http://www.milliyet.com.tr/muhtesem-yuzyil-kosem-ne-zaman-gundem-2138170/|publisher=Milliyet|date=26 Oktober 2015|language=Turki}}</ref> Sebuah cuplikan dari acara tersebut ditayangkan di [[Cannes]], PerancisPrancis di festival televisi internasional tahunan [[MIPCOM]] sekitar sebulan sebelum penayangan perdananya di [[Star TV (Turki)|Star TV]] pada 12 November 2015.<ref>{{cite web |url=http://pressroom.mipcom.com/press-release-en/turkey-mipcom-2015-country-of-honour-launches-in-istanbul-0604-4119 |title=TURKEY MIPCOM 2015 COUNTRY OF HONOUR LAUNCHES IN ISTANBUL EVENTS TO INCLUDE EXCLUSIVE "KOSEM THE EMPRESS/MAGNIFICENT CENTURY" SCREENING |author=<!--Staff writer(s); no by-line.--> |date=4 Juni 2015 |website=pressroom.mipcom.com |publisher=MIPCOM |accessdate=14 November 2015}}</ref><ref>{{cite web |url=http://variety.com/2015/tv/markets-festivals/magnificent-century-kosem-mipcom-turkey-1201605640/ |title=Mipcom: Turkey’s ‘Magnificent Century: Kosem’ Set to Sell at TV Mart |last1=Carney |first1=Joshua |date=30 September 2015 |website=Variety.com |publisher=Variety |access-date=14 November 2015}}</ref> Di [[Indonesia]], serial tersebut ditayangkan di [[SCTV]].<ref>http://www.tabloidbintang.com/articles/film-tv-musik/kabar/38683-sctv-hadirkan-abad-kejayaan-2-kosem-apa-hubungannya-dengan-abad-kejayaan-antv</ref>
