Today I passed from Europe to Asia by speedy train and then went by Marmaray Train under the Sea we passed through Bosphorus and arrived at Uskudar, the frontier shores of Asia in Istanbul, saw the opposite side as European side of Besiktas, Galata Tower and Dolmabahçe Palace.
Iside the city within Istanbul we change the continents, we pass through from one continent Europe to another one to Asia. I think this is a unique case in the world.
For that reason İstanbul is an invaluable city and then it’s the capital of the world since Constantin the Great.