Explore the fascinating history of Hagia Sophia, Basilica Cistern and Grand Bazaar during this half-day privately guided tour of imperial Istanbul. Discover the ancient church, former mosque and now internationally famous museum, the Hagia Sophia. This tour will wind you through the Grand Bazaar where you can haggle for Turkish treasures and then take you 500 feet below ground into the historic Basilica Cistern where a James Bond once thwarted evil plans.