This morning depart on an optional tour of St. Sophia, a church built in the 6th century Byzantine capital, converted to a mosque by the Ottomans, and now a museum and one of the world’s greatest architectural wonders. Also, choose to embark on a half-day Bosphorus cruise enjoying the strait that separates Asia and Europe. Its shores are lined with fine neighborhoods, Ottoman palaces, fortresses, old wooden villas, hotels, parks and gardens, restaurants and cafés. Depart for the capital city of Ankara for overnight.