Ah, Constantinople, Queen of Cities and the Door to Happiness. Istanbul is the only city in the world built on two continents—Europe and Asia—and its appeal is truly universal. The Romans, Byzantines, and Ottomans all ruled their empires from here, leaving behind some of their finest monuments and a fascinating blend of cultures. Visit the harem at Topkapi Palace, where the clatter of silver soles once warned concubines of the approaching sultan. Admire the Iznik tiles and stained glass windows of the Blue Mosque, and the mystical light bathing the nave of Hagia Sofia. Shop the Grand Bazaar for a coffee cezve, magic lamp, embroidered slippers, or hand-woven kilim. Temper a tiny cup of potent Turkish coffee with bites of sweet lokum (Turkish delight).