We went for a daily ferry tour to the Princes' Islands of Istanbul. It was a great boat tour for just a few dollars. We pictured fishing boats off Princes' Islands at the Marmara Sea. Visited the bridge and took pics at the bridge with the skipper. Princes Islands are great destination for both ferry cruise, and walking or horse cart riding at Buyukada. Here we go: http://istanbul-backpacker.blogspot.com