Explore Istanbul’s classic sights including the breathtaking Hagia Sophia during a 6-hour sightseeing tour with an experienced guide. Start by taking in the monuments of the Hippodrome, including the Obelisk of Theodosius, Serpentine Column and the German Fountain. Then visit the Blue Mosque and the Hagia Sophia, learning about the long history of the Byzantine and Ottoman Empires. After lunch, spend time at Topkapi Palace (the Seraglio), the opulent court for the Ottoman sultans from the 15th to 19th centuries.