Dresden was founded as a merchant settlement and has been the residence of the Saxon dukes, electors and later kings since the 15th century. Especially in the 18th century the city was a centre of culture and economy as well as of European politics. The state capital of Saxony has around 540,000 inhabitants today and maintains partnerships with 13 cities worldwide. The state capital is an important economic centre, a student and bicycle city and offers numerous cultural offers and sights. In addition, the city has a dense network of public transport - the tram network is one of the largest in Germany. One focus is on research and education; with its numerous research facilities, Dresden ranks fifth in Germany. In addition, the Technical University is the only "Excellence University" in East Germany. Not only the high proportion of forest and green spaces as well as numerous leisure and excursion possibilities make Dresden a family-friendly city. Mostly moderate average rents in comparison to other large cities, good shopping opportunities and a focus on the expansion of daycare places and schools also lead to a high birth rate. Numerous companies attach importance to family friendliness, e.g. through flexible working time models.