It complements the Berlin U-Bahn and is the link to many outer-Berlin areas, such as Berlin Schönefeld Airport.
While in the first decades of this tariff zone the trains were steam-drawn, and while even after the electrification of large parts of the network a number of lines remained under steam, today the term S-Bahn is used in Berlin only for those lines and trains with third-rail electrical power transmission and the special Berlin S-Bahn loading gauge.
is a rapid transit railway system in and around Berlin, the capital city of Germany.
It has been in operation under this name since December 1930, having been previously called the special tariff area Berliner Stadt-, Ring- und Vorortbahnen (Berlin city, circular, and suburban railways).
It is indeed an indoor water park - one of the largest of its kind - and it didn't actually house zeppelins (though that is a persistent rumor).
operate (clockwise and counter-clockwise, respectively) along the Ringbahn, the circular line running through Ostkreuz, Südkreuz, Westkreuz and Gesundbrunnen.
The extension to the Berlin Brandenburg Airport is under construction.
It's both walkable and easy to cycle, so owning a car is a matter of choice, not necessity.
Moreover, the city's history is still visible on its streets, but it is not mired in the past.