Istanbul as a city that straddles two continents. Crossings between Asian and European Istanbul are over or under a narrow strait called the Dardanelles, which feeds into the Sea of Marmara, which leads to the Aegean Sea. Today we looked at the four modern suspension bridges connecting Asian Istanbul to European Istanbul: the 15 July Martyrs Bridge, the Fatih Sultan Mehmet Bridge, Yavuz Sultan Selim Bridge, and the Çannakale 1915 Bridge (the newest of all four).