Immerse in Istanbul's UNESCO-listed Old City and visit the highlights of the ancient city of Constantinople on this 9-hour, small-group sightseeing tour led by an art historian. Marvel at the dome of the Hagia Sophia (from Out Side Not Entry)), descend into the bowels of the Basilica Cistern (from Out Side Not Entry), and explore the Roman-era Hippodrome. After a 3-course Turkish lunch, admire the Blue Mosque and Topkapi Palace, and brave the chaos of the Grand Bazaar.