After a short break for lunch, our next venue is the Hagia Sophia, one of the world's architectural gems. An ancient basilica dating back to the 4th century, the Hagia Sophia stood as the Cathedral of Constantinople for over a thousand years before being converted into a mosque in 1453; today it serves as a museum attracting people from all over the world. We end your tour at Istanbul's famous Grand Bazaar, the largest and the oldest covered marketplace in the world, where you may find all kinds of gifts, leather, clothing, rugs, antiques, and jewelry in an authentic Oriental atmosphere. Immerse yourself in the sights, sounds, and aromas of this bustling bazaar, and shop till you drop!