Beşiktaş Jimnastik Kulübü ( Turkish pronunciation: [beˈʃictaʃ] , lit. ' Beşiktaş Gymnastics Club ' ), abbreviated as BJK , is a Turkish professional sports club founded in 1903 that is based in Istanbul . The club's football team is one of the Big Three in Turkey and one of the most successful teams in the country, having never been relegated to a lower division. It was the first registered sports club in the country and one of the few that acquired the right to bear the Turkish flag on its crest.
