Berlin is the capital and government seat of the Federal Republic of Germany. With 3.4 million inhabitants, Berlin is the town with the biggest population of Germany, as well as the second most populated town of the European Union. The metropolis is also known for politics, media and sciences. Berlin offers many places of interest, museums and historical sightseeings, all of which are must-seen while in town. It is an important European traffic interchange and one of the most-visited towns of the continent.