Welcome to Four Seasons Hotel Istanbul at the Bosphorus. On the European bank of the Bosphorus – which flows through Istanbul’s history and heart – Four Seasons gives a 19th-century palace a fresh, eclectic spirit. Alluring facilities include a chic urban spa. Fine restaurants and pools by the quayside overlook the Asian shore. And all are awash in the light, space and excitement of this water’s-edge location.