Whether you take the ferry between Europe and Asia or trace a loop up the Bosphorus toward the Black Sea, the must-do Bosphorus cruise gives you a chance to view the city’s best landmarks from the water. The two-hour cruise from Eminönü is recommended to see the Maiden’s Tower, Bosphorus bridges, waterside Ottoman palaces, and wooden multimillion-dollar yalılar (mansions). Take a seat on the deck and enjoy the city sliding past.