Excursion groups go on a six-hour excursion around the Bosphorus from the pier near the Galata Bridge. The walk takes the following route: Eminenu - Uchkudar, Leandra tower - Cabotash, Dolmabahce Palace - Ortaköy - Bosporus bridge - Beylerbey Palace - Arnavutkei village and Bebek - European fortress - Sariier village - AnadoluKavaġi fishing village. At the final stop, the ship costs 3 hours, then goes back. The ticket price is 17, 50 TRY. You can find out the ferry schedule on the official website