The tunnel between Uskudar and Yenikapi neighborhoods was put into service in October 2013. It’s a big project constructed by Japanese companies, which is delayed for 4 years due to technical reasons and archaeological findings. This tunnel connects only railways / subway between Europe and Asia, but not motor vehicles.
After the cruise visiting the Dolmabahçe Palace on the European coast of the Bosphorus, served as the main administrative center of the Ottoman Empire from 1856 to 1887 and 1909 to 1922.