Istanbul Başakşehir Futbol Kulübü, commonly known simply as Başakşehir, is a professional football club based in Istanbul, Turkey, competing in the Süper Lig. The club plays its home matches at the Başakşehir Fatih Terim Stadium. Founded relatively recently in 1990 as İstanbul Büyükşehir Belediyespor, the club was reinvented in 2014 with its current name and identity, representing the modern Başakşehir district. The club's peak era arrived in the late 2010s, culminating in a historic Süper Lig title in the 2019-20 season, breaking the traditional dominance of Istanbul's "Big Three." This achievement, built on a foundation of experienced players like Edin Visca, Martin Skrtel, and Demba Ba, and astute management, marked a seismic shift in Turkish football. The modern era sees Başakşehir established as a consistent top-four contender and regular participant in European competitions. The club's culture is one of modern professionalism and strategic planning, with a growing but still-developing fan base compared to Istanbul's historic giants.