Venture to imperial monuments rich with history and discover the Hagia Sophia, Basilica Cistern and the Grand Bazaar during this half-day guided tour in Istanbul. Gaze at the Hagia Sophia’s massive columns and dome during a visit to one of the world’s largest basilicas and most popular museums in Turkey. This tour will take you underground to Basilica Cistern which was once the backbone of the Great Palace of Constantinople. Enjoy a trip to the Grand Bazaar where you can barter for souvenirs and feel the pulse of one of the oldest and largest covered markets on the planet.