
Mannheim is a city in the northwest corner of the state of Baden-Württemberg in Germany, at the confluence of the Rhine and Neckar rivers. The public transportation system is quite extensive. Bus routes cover Mannheim, and the street car system connects Mannheim to Ludwigshafen across the river, Heidelberg a few minutes away, and Weinheim, in addition to major routes across and through the city.
The most parts of Mannheim are safe, but there are a couple of districts that have higher crime rates. Examples are Vogelstang, Neckarstadt-West, Jungbusch (night) and some others. Street crime and violence, however, are very rare, so you will be perfectly ok if you simply use your common sense. In particular, it is not dangerous at all to visit the pubs and clubs of the Jungbusch or the Neckarstadt.