QNB Finansbank is a Turkish bank with headquarters in Levent, Istanbul. It was established by leading Turkish banker Hüsnü Özyeğin in 1987 and for a period was the Turkish bank with the largest network of foreign branches. On March 18, 2014, Turkish daily Hürriyet reported the purchase by National Bank of Greece (NBG) of Soyak Kristal Kule (Soyak Crystal Tower), a 40-floor, 60,000 square-meter office tower in Levent, one of the main business districts in Istanbul.