Karaköy in the context of "Bosphorus"

Throughout most of its history, Istanbul has ranked among the largest cities in the world. By 500 CE, Constantinople had somewhere between 400,000 and 500,000 people, edging out its predecessor, Rome, for world's largest city. Constantinople jostled with other major historical cities, such as Baghdad, Chang'an, Kaifeng and Merv for the position of world's most populous city until the 12th century. It never returned to being the world's largest, but remained Europe's largest city from 1500 to 1750, when it was surpassed by London.

The Turkish Statistical Institute estimates that the population of Istanbul Metropolitan Municipality was 15,701,602 at the end of 2024, hosting 18 percent of the country's population. Then about 97–98% of the inhabitants of the metropolitan municipality were within city limits, up from 89% in 2007 and 61% in 1980. 64.9% of the residents live on the European side and 35.1% on the Asian side. While the city ranks as the world's 5th-largest city proper, it drops to the 24th place as an urban area and to the 18th place as a metro area because the city limits are roughly equivalent to the agglomeration. Today, it forms one of the largest urban agglomerations in Europe, alongside Moscow. The city's annual population growth of 3.45 percent ranks as the highest among the seventy-eight largest metropolises in the Organisation for Economic Co-operation and Development. The high population growth mirrors an urbanization trend across the country, as the second and third fastest-growing OECD metropolises are the Turkish cities of İzmir and Ankara.

Eminönü, historically known as Pérama, is a predominantly commercial waterfront area of Istanbul within the Fatih district near the confluence of the Golden Horn with the southern entrance of the Bosphorus strait and the Sea of Marmara. It is located in the part of Istanbul known as the historical peninsula, connected to Karaköy (historic Galata) via the Galata Bridge across the Golden Horn. It was administered as part of the Sultanahmet district from 1928 to 2009 when Sultanahmet was absorbed into Fatih. Eminönü, which was a district municipality until March 7, 2008, was abolished on this date and connected to Fatih district by law. It is completely located within the city wall, the historical core of the city, and forms one of the most vibrant areas of the central area.

Eminönü's busy main square is overlooked by the New Mosque (Yeni Cami in Turkish) and the Spice Bazaar (Mısır Çarşısı in Turkish).

Galata is the former name of the Karaköy neighbourhood in Istanbul, which is located at the northern shore of the Golden Horn. The district is connected to the historic Fatih district by several bridges that cross the Golden Horn, most notably the Galata Bridge. The medieval citadel of Galata was a colony of the Republic of Genoa between 1273 and 1453. The famous Galata Tower was built by the Genoese in 1348 at the northernmost and highest point of the citadel. Galata is now a quarter within the district of Beyoğlu in Istanbul.

Karaköy Square is an area in Karaköy at the north end of the Galata Bridge on the northern bank of the Golden Horn. It is between the opposing directions of the Kemeraltı Street which temporarily splits at Karaköy Square. The metro stop on a part of the square is called Karaköy Station.

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  The Square at the end of the 1800's
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  From the square looking towards the Galata Bridge

The Galata Bridge (Turkish: Galata Köprüsü, Turkish pronunciation: [ˈɡaɫata cœpɾyˈsy]) is a bridge that spans the Golden Horn in Istanbul, Turkey. From the end of the 19th century in particular, the bridge has featured in Turkish literature, theater, poetry and novels. The current Galata Bridge is just the latest in a series of bridges linking Eminönü in the Fatih district and Karaköy in Beyoğlu since the early 19th century. The current bridge, the fifth on the same site, was built in 1994.

The bridge was named after Galata (the former name for Karaköy) on the northern shore of the Golden Horn.

Tophane (Turkish pronunciation: [topˈhane]) (lit. "Armoury") is a quarter in the Beyoğlu district of Istanbul, Turkey, running downhill from Galata to the shore of the Bosphorus where it joins up with Karaköy to the southwest and Fındıklı to the northeast.

In the Ottoman era, it was the city's first industrial zone.

Haydarpaşa station (Turkish: Haydarpaşa Garı) is a railway station in Istanbul, that was, until 2012 the main city terminal for trains travelling to and from the Anatolian side of Turkey. It used to be Turkey's busiest railway station. (Its counterpart on the European side of the city was Sirkeci station which served train services to and from the Thracian side of the country.) The station building still houses the headquarters for District 1 of the State Railways but since a fire in 2010 the station has not been in use and its future remains uncertain.

Haydarpaşa stands on an embankment over the Bosphorus just south of the Port of Haydarpaşa (one of the main container terminals in Turkey) and is slightly north of busy Kadıköy. Until the rail service was suspended, ferry services connected it to Eminönü, Karaköy and Kadıköy.