The foundation of Istanbul is usually dated to 667 BC. The
topography of Istanbul was formed at the and of the last Ice age.,
when meltwaters created the Bosphorus.
The city has attracted foreing visitors since time immemorial, as
Istanbul's museums are full of treasure. Given it's strategic
location on both land and sea trade routes between the dominant
civilizations of the old world, it is little wonder that the city
served in grand fashion as the seat of power of empires Ionian,
Roman, Byzantine and Ottoman.
There are many mosques, museums, columns, towers, fountains,
aqueducts in the old City, like the topkapi palace, The Blue Mosque,
German Fountain, Valens Aqueduct, the Haghia Sophia Fountains, the
Public Fountain of Sultan Mahmud II, Column of Constantine, Gotlar
Column, Çemberlitas Banded Column, and the Obelisque in Sultanahmet
Square, which was brought to Istanbul by Theodosius I in 390.