Understand
Steglitz-Zehlendorf is a borough in the southwest of Berlin. Zehlendorf is together with Charlottenburg the wealthiest part of Berlin and has a lot of lakes and forests, but also lots of culture and the biggest university in Berlin. Most famous is the Wannsee with its Strandbad, where on hot summer weekends all families visit, but there are also other lakes, where bathing is allowed and even free.
Steglitz was merged with Zehlendorf in 2001 and is an ordinary but nice residential and shopping district. Zehlendorf is more interesting for tourists because of its many museums, beautiful nature and some old castles.
Tempelhof is a borough of Berlin. In 2001 these two former boroughs were merged. Both are very different and were merged solely to have a bigger political unit. Tempelhof is an industrial area and in the south is a living area for families. The northern part is mainly occupied by the airport Tempelhof which was closed in October 2008.
Neukölln is a borough of Berlin. It consists of four sub-districts Britz, Buckow, Rudow and Neukölln. Neukölln has a history as a poor working-class district with a large number of migrants. Neukölln offers big contrasts between the densely populated northern part and the more village looking southern parts. Southern neighborhoods Britz, Buckow and Rudow became part of Berlin in the 1930s and kept its structure. In the past few years, the northern part of Neukölln, nick-named Kreuzkölln, has seen a transformation as a large influx of students and artists are moving into the neighborhood.
Treptow-Köpenick is a borough of Berlin. Köpenick is known for its old town, its castle and the many lakes and forests. And for the story of The Captain of Köpenick. Treptow is more a residential district and well known to Berliners for its big park and some beautiful views of River Spree. In some parts you can visit big ex-industrial areas which are now changing to something else i.e. cultural or shopping areas or simply fading away.