CöllnCölln (ˈkœln) was the twin city of Old Berlin (Altberlin) from the 13th century to the 18th century. Cölln was located on the Fisher Island section of Spree Island, opposite Altberlin on the western bank of the River Spree, until the cities were merged by Frederick I of Prussia to form Berlin in 1710. Today, the former site of Cölln is the historic core of the modern Mitte locality of the Berlin-Mitte borough in central Berlin. Cölln is first mentioned in a 1237 deed, denoting a priest Symeon of Cölln's (Symeon de Colonia) Saint Peter's Church as a witness.
Scheunenviertel(German: "Barn Quarter") is a neighborhood of Mitte in the centre of Berlin. It is situated to the north of the medieval Altberlin area, east of the Rosenthaler Straße and Hackescher Markt. Until the Second World War it was regarded as a slum district and had a substantial Jewish population with a high proportion of migrants from Eastern Europe. The name derives from several barns erected here outside the city walls in 1672 by order of Elector Frederick William of Brandenburg.
Berlin U-BahnThe Berlin U-Bahn (ˈuː baːn; short for Untergrundbahn, "underground railway") is a rapid transit system in Berlin, the capital and largest city of Germany, and a major part of the city's public transport system. Together with the S-Bahn, a network of suburban train lines, and a tram network that operates mostly in the eastern parts of the city, it serves as the main means of transport in the capital. Opened in 1902, the U-Bahn serves 175 stations spread across nine lines, with a total track length of , about 80% of which is underground.
AlexanderplatzAlexanderplatz (alɛkˈsandɐˌplats) (Alexander Square) is a large public square and transport hub in the central Mitte district of Berlin. The square is named after the Russian Tsar Alexander I, which also denotes the larger neighbourhood stretching from Mollstraße in the north-east to Spandauer Straße and the Rotes Rathaus in the south-west. Alexanderplatz is reputedly the most visited area of Berlin, beating Friedrichstrasse and City West.
BerlinBerlin (bɜːrˈlɪn , bɛʁˈliːn) is the capital and largest city of Germany by both area and population. Its more than 3.85 million inhabitants make it the European Union's most populous city, according to population within city limits. One of Germany's sixteen constituent states, Berlin is surrounded by the State of Brandenburg and contiguous with Potsdam, Brandenburg's capital. Berlin's urban area, which has a population of around 4.5 million, is the most populous urban area in Germany.