Buyukada. Just off the coast of Istanbul lie the Prince’s Islands. Buyukada, the largest of them all, offers visitors a ride to the beach in quaint horse-drawn carriages. The blue-green waters are surrounded by netting, which keeps sharks out, but allows swimmers to share the water with playful little hamsi (sardines), tiny jellies, and other small fry. Afterward, head to one of the side streets for some of the tastiest seafood on the planet.