When your cruise ship docks in Istanbul, head out on a 3.5-hour shore excursion to visit the city’s famous Spice Bazaar and then cruise along the Bosphorus Strait. Travel between each site by coach as an onboard guide talks about the city’s history, and make the most of free time at the bazaar to browse its colorful and aromatic produce at leisure. Then, hop aboard a sightseeing boat and admire Dolmabahçe Palace, Rumeli Hisarı Fortress and other grand mosques and fortresses that line the Bosphorus’ shores.