District
In Berlin there is more than one downtown area. Berlin has many districts or boroughs, called Bezirke, and each district has its unique style. Each Bezirk is composed of several Kieze - a Berlin term referring to "neighborhood", with their unique style. Some districts of Berlin are more worthy of the traveller's attention than others.

Following are the districts of greatest interest:

Mitte - the historical center of Berlin and the nucleus of the former East Berlin. Many cafes, restaurants, museums, galleries and clubs throughout the district, along with many sites of historic interest.
Charlottenburg - heart of City West and centered around the Schloss Charlottenburg Friedrichshain-Kreuzberg - associated with the left wing youth culture, artists and Turkish immigrants (the latter especially in Kreuzberg), this district is somewhat noisier than most, lots of cafes, bars and clubs, but also some museums in Kreuzberg near the border to Mitte.
Prenzlauer Berg - a trendy area undergoing gentrification, north of the city center. Popular with students, artists and media professionals, lots of cafes and bars Schöneberg - cosy area for ageing hippies, young families and homosexuals. Famous are the markets on Saturdays, the street cafes (e.g. Akazienstrasse) and the laissez-faire life style.
Zehlendorf - Zehlendorf is one of the greenest and wealthiest districts in Berlin and the biggest university in town (Freie Universität) is located here, but often ignored are the great museums and some important historical buildings. Areas of interest that are not districts but known rather by name than by district
Ku'Damm (short for Kurfürstendamm) - one of the main shopping streets in Berlin, especially for luxury goods. Many great restaurants and hotels, also in the side roads. Located in the district

Transportation
By air - Berlin has three airports :
Tegel International Airport - located in the north-west of the city; the main airport for the flagcarriers (Lufthansa, BA, Air France, KLM, Delta etc) and hub for domestic flights as well as those from western Europe and the USA. Buses from Tegel operate to S+U Alexanderplatz, Hauptbahnhof (bus TXL) and S+U Zoologischer Garten (buses X9 and 109) for the standard ticket fare. Attention! Do not take any train to the "Tegel" railway (S-Bahn) station, which is not connected to the airport, but rather to the suburban village called Tegel. It is not possible to walk or to otherwise easily get to the airport from that station. Tegel airport does not have any railway station. Any indication to a Tegel railway station refers to the remote S-Bahn station, even if railway staff at stations in other cities might tell otherwise. Schönefeld - small airport southeast of the city centre; increasingly the focus for low-cost airlines (e.g. Easyjet, RyanAir and GermanWings) and charter flights in addition to traffic from Asia and eastern Europe. The airport is served by the S-Bahn and train: the line S9 will take you conveniently to (and through) the city centre via such major stations as S Ostbahnhof, S+U Alexanderplatz, S Hauptbahnhof and S+U Zoologischer Garten. There are also less regular but faster regional trains that cost the same and stop at these major train stations too. In S-Bahn and regional trains between the airport and the city, the public transport ticket (zones A and B, 2,10 EUR) can be used. Stamp before boarding. Tempelhof - a small relic of the pre-war era due for closure in October 2008, Tempelhof is located immediately south of the city centre but has only a small number of connections serviced mainly by domestic and european flights (Eurowings, DBA, Windrose Air, Brussels Airlines and numerous minor business carriers). Take U6 at Platz der Luftbrücke to S+U Friedrichstrasse Station.