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Ortaköy Mosque on the waterfront beneath the 15 July Martyrs Bridge

Istanbul · between two continents

The Bosphorus, from the water

A guide to the strait that runs through Istanbul — the palaces and fortresses on its shores, the bridges over it, and how to see them all from the deck of a boat.

A city on both sides of a sea lane

The Bosphorus joins the Black Sea to the Sea of Marmara and divides Istanbul between Europe and Asia. For centuries it was the reason the city mattered: whoever held it controlled the passage between two seas.

The best way to understand it is from the water. From a boat the palaces show the faces they were built to show, the fortresses face each other across the narrows as they did in 1452, and the city’s skyline turns slowly as you pass.

The strait in numbers

from the Black Sea to the Sea of Marmara
About 31 kmfrom the Black Sea to the Sea of Marmara
at its narrowest, between Kandilli and Aşiyan
About 700 mat its narrowest, between Kandilli and Aşiyan
suspension bridges, opened in 1973, 1988 and 2016
Threesuspension bridges, opened in 1973, 1988 and 2016
Europe on the west bank, Asia on the east
Two continentsEurope on the west bank, Asia on the east

Seeing it from the deck

Two cruises sail from Istanbul’s old city. Both are booked on our sister site, bosphorustour.org.

Bosphorus sightseeing cruise

About two hours on the water from Ahırkapı Pier below Topkapı Palace: up the European shore to the fortress of Rumeli Hisarı and back along the Asian side, past the Maiden’s Tower.

Dates and tickets

Bosphorus dinner cruise

An evening on the strait with dinner on board, as the lights come on along both shores.

About the dinner cruise

Clicking a button takes you to bosphorustour.org, where the calendar, the prices and the booking are.

Two shores, one strait

The European shore carries the imperial palaces and the old villages; the Asian shore is greener and quieter, with summer palaces and wooden waterside mansions.

All landmarks

From the blog

Longer reads on the strait’s history, its landmarks and how to make the most of a cruise.

All articles