Berlin

Berlin's 2001 administrative reform merged several boroughs, reducing their number from 23 to 12.

Berlin's history has left the city with a polycentric organization and a highly eclectic array of architecture and buildings. The city's appearance today has been predominantly shaped by the key role it played in Germany's history during the 20th century. All of the national governments based in Berlin – the Kingdom of Prussia, the 2nd German Empire of 1871, the Weimar Republic, Nazi Germany, East Germany, as well as the reunified Germany – initiated ambitious reconstruction programs, with each adding its own distinctive style to the city's architecture.

The East Side Gallery is an open-air exhibition of art painted directly on the last existing portions of the Berlin Wall. It is the largest remaining evidence of the city's historical division.

The Funkturm Berlin is a 150-meter-tall (490 ft) lattice radio tower in the fairground area, built between 1924 and 1926. It is the only observation tower which stands on insulators and has a restaurant 55 m (180 ft) and an observation deck 126 m (413 ft) above ground, which is reachable by a windowed elevator.

IFA is the one of Europe's leading trade show for consumer electronics.
Airports in Berlin, including those that are no longer used (as of November 2020)

Among them are the German Heart Center, one of the most renowned transplantation centers, the Max-Delbrück-Center for Molecular Medicine, and the Max-Planck Institute for Molecular Genetics. The scientific research at these institutions is complemented by many research departments of companies such as Siemens and Bayer. The World Health Summit and several international health-related conventions are held annually in Berlin.

The Berlin-Brandenburg capital region is one of the most prolific centers of higher education and research in Germany and Europe. Historically, 67 Nobel Prize winners are affiliated with the Berlin-based universities.

Invented in Berlin, currywurst is an icon of German popular culture and cuisine.