Ali Sami Yen Spor Kompleksi - Türk Telekom Arena is a multi-purpose stadium in the Sarıyer district of Istanbul, Turkey. It is the new home ground for Galatasaray S.K., replacing the old Ali Sami Yen Stadium. The all-seater stadium has the capacity to host 52,652 spectators during football games. On March 18, 2011, it recorded 131.76 decibels which was considered to be the World record for "loudest crowd roar at a sport stadium" in Guinness World Records Later, it was broken on September 15, 2013, in an NFL American football game that reached 136.6 decibels.
Türk Telekom Arena was the first stadium in Turkey that met the UEFA Euro 2016 requirements during the country's bid to host the European Championship. In 2011, Türk Telekom Arena was one of the six nominees for the Venue of the Year and New Venue categories of the Stadium Business Awards. Galatasaray SK won the Süper Lig in the first season at Türk Telekom Arena. Türk Telekom Arena and Galatasaray SK were mentioned in the first chapter of Tom Clancy's 2012 novel Threat Vector.