Founded by the Greeks as Byzantium more than 2,500 years ago, renamed Constantinople in 330 AD when Constantine the Great elected it the capital of the Roman Empire, and finally called Istanbul after the Ottoman conquest in the 15th century, the city on the Bosporus always was and still is one of the most exciting places in the world. Its strategic location as gateway between Orient and Occident, the Islamic and the Christian worlds, the Black Sea and the Mediterranean, predestined it for a turbulent history. Start your sightseeing at Emperor Justinian’s HAGIA SOPHIA and Sultan Ahmet’s BLUE MOSQUE, magnificent monuments to two competing world religions standing peacefully side by side. Next, turn to the TOPKAPI SERAGLIO, the residence of the Ottoman Sultans. Admire its exquisite collection of Chinese porcelain and the stunning Imperial Treasury, including the “Spoonmaker’s Diamond.” The rest of the afternoon is free. You may wish to cruise the Bosporus, and for a taste of Turkish nightlife, join our optional dinner outing and discover the fascination of belly dancing. (Breakfast)