The city has been conquered, fought over and rebuilt many times over the centuries.
                Istanbul's history dates back to the first settlement possibly in the 13th Century
                BC, although was founded by Byzas the Megarian in the 7th Century BC, from when
                the city was named Byzantium. A small colony of Greeks inhabited the area until
                3rd Century BC, and over the next 1000 years became a thriving trading and commercial
                centre. Whilst continuing life as a trading city during the Roman Empire, it was
                then conquered by Emperor Septimus Severius in 193 AD.
            
            
            
                During the 4th century, Istanbul was selected by the Roman Empire to be the new
                capital, instead of Rome, by Constantine. It was a strategic choice: Built on seven
                surrounding hills – echoing that of Rome – the city would have control of the Bosphorus
                and easy access to the harbour of the Golden Horn. The city was re-organized within
                six years, its ramparts widened and the construction of many temples, official buildings,
                palaces, hamams and hippodrome.
            
            
            
                With a great ceremony, in the year 330, the city was officially announced as the
                capital of the Roman Empire, and known as Constantinople in the late eras.
            
            
            
                It remained the capital of the eastern Roman Empire (Byzantine) for a long period,
                due to the fall of the west Roman Empire in the 5th century. By the sixth century,
                the population exceeded half a million, and was considered a golden age under Emperor
                Justinyen's reign.
            
            
            
                The Byzantium Empire and Istanbul's latter history is full of palace and church
                intrigues, was overrun by the Arabs in the 7th and 8th centuries, the Bulgars in
                the 9th and 10th, but could not keep out the Crusaders who conquered in 1204. They
                destroyed and raided it for many more years - including churches, monasteries and
                monuments, which led to a decline in the population. The city passed reign to Byzantium
                again in 1261, did not regain its former richness, and was conquered by Turks in
                1453 after a 53-day siege and the hands of control changed yet again.
            
            
            
                It then became the capital city of Ottoman Empire, which saw a population increase
                with immigrants from other parts of the country, with religious freedom and social
                rights granted to Greeks, Armenians and Jews. Mehmet the Conqueror began to rebuild
                it, with a new palace and mosque (Fatih Camii) and tried to inject new life into
                the economy.
            
            
            
                The reign of Suleyman the Magnificent (1520-66) was considered the greatest of all
                the Ottoman leaders, and the military conquests paid for the most impressive Ottoman
                architecture, the work of Mimar Sinan. The city was also the centre of the Islamic
                work, and domes and minarets from hundreds of mosques dotted the skyline.
            
            
            
                But a century after the death of Suleyman, the Empire started to decline again.
                By the end of the 18th century, whilst the empire was in decline with more territory
                being lost to the West, and sultans becoming more interested in Western institutional
                models. There was a short-lived Ottoman parliament and constitution in 1876, and
                by the end of the World War I during which allied troops occupied the city, the
                once-great empire was in shambles.
            
            
            
                This changed radically with the emergence of a prominent commander of the Turkish
                army, who entered the struggle for the Turkish nation. Mustafa Kemal Ataturk was
                considered a hero after the 4-year long War of Independence, after which he established
                the Republic if Turkey in 1923. Moving the capital to Ankara, then a small provincial
                town in Anatolia, Istanbul was simply the commercial and cultural centre, which
                it still remains today.