Institute for Marxism-Leninism for the Central Committee of the SED

The Stasi Records Agency (German: Stasi-Unterlagen-Behörde) was the organisation that administered the archives of Ministry of State Security (Stasi) of the former German Democratic Republic (East Germany). It was a government agency of the Federal Republic of Germany. It was established when the Stasi Records Act came into force on 29 December 1991. Formally it was called the Federal Commissioner for the Records of the State Security Service of the former German Democratic Republic (German: Bundesbeauftragter für die Unterlagen des Staatssicherheitsdienstes der ehemaligen Deutschen Demokratischen Republik); the official German abbreviation was BStU. On June 17, 2021, the BStU was absorbed into the German Federal Archives (Bundesarchiv). The Stasi was established on 8 February 1950. It functioned as the GDR's secret police, intelligence agency and crime investigation service. It grew to have around 270,000 people working for it, including about 180,000 informers, or "unofficial collaborators". It was renamed the "Office for National Security" (German: Amt für Nationale Sicherheit) on 17 November 1989. It was dissolved on 13 January 1990.The Stasi spied on almost every aspect of East Germans' daily lives, and it carried out international espionage. It kept files on about 5.6 million people and amassed an enormous archive. The archive holds 111 kilometres (69 mi) of files in total. About half of the material is held in the Stasi Records Agency's headquarters in Berlin, and the rest is in its 12 regional offices. As well as written documentation, the archive has audio-visual material such as photos, slides, film, and sound recordings. The Stasi also had an archive of sweat and body odour samples which its officers collected during interrogations.

The Karl-Liebknecht-Haus or Karl Liebknecht House is the headquarters of the party The Left in Germany. It is located between the Alexanderplatz and Rosa-Luxemburg-Platz in Berlin-Mitte. Constructed in 1912 as a factory, the building was purchased by the Communist Party of Germany (Kommunistische Partei Deutschlands, KPD) in 1926. It became the seat of its Central Committee and was named in honor of Karl Liebknecht, the KPD leader who was murdered by a paramilitary unit in January 1919. After Adolf Hitler was appointed as German chancellor, the Berlin police raided the headquarters, and by March 1, the Nazi swastika flag was flying over the building. Renamed the Horst Wessel House, the building at first served as a district police station and detention center in which Jews and political opponents were tortured. In 1935, the finance department of the state of Prussia moved into the building. Severely damaged during World War II, the building was repaired in 1948, and the name "Karl Liebknecht House" restored. It housed the East German Institute for Marxism-Leninism after 1950. The building became the headquarters for the Party of Democratic Socialism (PDS), the reformed successor of East Germany's former ruling party, in May 1990. In 2005, the PDS was renamed "The Left Party PDS" in preparation for its merger with the Party of Social Justice-Electoral Alternative (WASG). The building continues to serve as the headquarters of the new party, which is called simply "The Left" (Die Linke) after the merger was completed in June 2007.

The Volksbühne ("People's Theatre") is a theater in Berlin. Located in Berlin's city center Mitte on Rosa-Luxemburg-Platz (Rosa Luxemburg Square) in what was the GDR's capital. It has been called Berlin's most iconic theatre.

The Kino Babylon is a cinema in the Mitte neighbourhood of Berlin and part of a listed building complex at Rosa-Luxemburg-Platz opposite the Volksbühne theatre. The building was erected 1928–29. It was designed by the architect Hans Poelzig in the Neue Sachlichkeit style. In 1948 the theatre was heavily renovated and served afterward as a speciality cinema for the German Democratic Republic (East Germany). After the auditorium was closed because of the danger of collapse, it was restored from 1999 to 2001 in accordance with conservation guidelines. In 2002 the restoration was awarded the "German Award for Monument Protection". Since 2001 the Babylon has been used primarily as an arthouse cinema, as well as a venue for the Berlin Film Festival and musical and literary cultural events. Originally the cinema held an audience of 1200 in one auditorium, but now it is divided into two auditoriums with 450 seats and 70 seats respectively.

Rosa-Luxemburg-Platz, formerly the Bülowplatz, is a square in Berlin-Mitte, Germany.

Rosa-Luxemburg-Straße is a street in central Berlin, the capital of Germany. The street runs north from Dircksenstraße in the inner eastern part of the city, to Torstraße where it becomes Schönhauser Allee. The best-known building on Rosa-Luxemburg-Straße is the Volksbühne ("people's theatre") at Rosa-Luxemburg-Platz (which was called Bülowplatz before World War II and Horst-Wessel-Platz during the Nazi period). Before World War II, Rosa-Luxemburg-Straße was not a separate street, but a continuation of Kaiser-Wilhelm-Straße, the rest of which is now called Karl-Liebknecht-Straße. During the years of the German Democratic Republic it was named for Rosa Luxemburg, a leading Marxist theoretician and one of the leaders of the Spartacist League, who was killed following the unsuccessful Communist Spartacist uprising in Berlin in 1919. It is one of the few streets in East Berlin named for a prominent Communist that has retained its name following the reunification of Germany in 1990.

The House of Travel (German: Haus des Reisens) is a 18-story building at Alexanderplatz in the Mitte district of Berlin. It was completed in 1971 and is located at Alexanderstraße 7.

The Free Software Foundation Europe (FSFE) is an eingetragener Verein (registered voluntary association) incorporated under German law. It was founded in 2001 to support all aspects of the free software movement in Europe, with registered chapters in several European countries. It is the European sister organization of the US‑based Free Software Foundation (FSF), although each foundation exists as a separate organization. Following the return of Richard Stallman to the FSF in 2021, the FSFE declared themselves "unable to collaborate" with the FSF.

Rosa-Luxemburg-Platz is a Berlin U-Bahn station located on the U2. It was formerly called Schönhauser Tor and is located at the foot of Schönhauser Allee, at the corner of Torstraße. The color of the station is yellow.

The Conference of Communist and Workers Parties of Europe was an international meeting of communist parties, held in the city of East Berlin, capital of the communist-governed East Germany, on 29–30 June 1976. In all, 29 parties from all Europe (except Albania, Iceland and some microstates) participated in the conference.The conference highlighted several important changes in the European communist movement. It exhibited the declining influence of the Communist Party of the Soviet Union and a widening gap between the independent and orthodox camps amongst European communist parties, with the ascent of a new political trend, Eurocommunism.

The Park Inn by Radisson Berlin Alexanderplatz is the tallest building and the eleventh-tallest structure in Berlin and the 29th-tallest building and tallest hotel-only building in Germany. The 37-floor high-rise is in the northeast of Alexanderplatz in the central Mitte district and has a height of 125 metres (410 feet).

Senefelderplatz is a Berlin U-Bahn station located on the line. The station is situated under Senefelderplatz, named after the inventor of the printing technique of lithography, Alois Senefelder. The station was designed by Alfred Grenander and opened in 1913. The grey tiles on the walls are still not covered with advertisements. In November 1943, this station was heavily damaged twice - entrance and the ceiling penetration.