Free Walking Sightseeing Tour #4 in Berlin, Germany

Raimund Pretzel, better known by his pseudonym Sebastian Haffner, was a German journalist and historian. As an émigré in Britain during World War II, Haffner argued that accommodation was impossible not only with Adolf Hitler but also with the German Reich with which Hitler had gambled. Peace could be secured only by rolling back "seventy-five years of German history" and restoring Germany to a network of smaller states.

Wikipedia: Sebastian Haffner (EN)

Albert Einstein was a German-born theoretical physicist who is widely held to be one of the greatest and most influential scientists of all time. Best known for developing the theory of relativity, Einstein also made important contributions to quantum mechanics, and was thus a central figure in the revolutionary reshaping of the scientific understanding of nature that modern physics accomplished in the first decades of the twentieth century. His mass–energy equivalence formula E = mc2, which arises from relativity theory, has been called "the world's most famous equation". He received the 1921 Nobel Prize in Physics "for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect", a pivotal step in the development of quantum theory. His work is also known for its influence on the philosophy of science. In a 1999 poll of 130 leading physicists worldwide by the British journal Physics World, Einstein was ranked the greatest physicist of all time. His intellectual achievements and originality have made the word Einstein broadly synonymous with genius.

Wikipedia: Albert Einstein (EN)

Nuclear fission was discovered in December 1938 by chemists Otto Hahn and Fritz Strassmann and physicists Lise Meitner and Otto Robert Frisch. Fission is a nuclear reaction or radioactive decay process in which the nucleus of an atom splits into two or more smaller, lighter nuclei and often other particles. The fission process often produces gamma rays and releases a very large amount of energy, even by the energetic standards of radioactive decay. Scientists already knew about alpha decay and beta decay, but fission assumed great importance because the discovery that a nuclear chain reaction was possible led to the development of nuclear power and nuclear weapons. Hahn was awarded the 1944 Nobel Prize in Chemistry for the discovery of nuclear fission.

Wikipedia: Discovery of nuclear fission (EN)

The Jesus Christ Church Dahlem is a Protestant church in the Berlin district of Dahlem in the district of Steglitz-Zehlendorf.

Wikipedia: Jesus-Christus-Kirche Dahlem (DE)

The Harnack House in the Dahlem district of Berlin, Germany was opened in 1929 as a centre for German scientific and intellectual life. Located in the intellectual colony of Dahlem, seat of the Free University Berlin, it was founded by the Kaiser Wilhelm Gesellschaft (KWG) on the initiative of its first president, the theologian Adolf von Harnack, and of its then chairman, Friedrich Glum. The project was supported politically by the Weimar Republic Chancellor Wilhelm Marx and Foreign Minister Gustav Stresemann, and an influential Centre Party deputy Georg Schreiber. The land for its construction was donated by the state of Prussia, and the costs of building and furnishing the house were defrayed partly by the government, and partly by public subscription.

Wikipedia: Harnack House (EN)

The Kaiser Wilhelm Institute of Anthropology, Human Heredity, and Eugenics was founded in 1927 in Berlin, Germany. The Rockefeller Foundation partially funded the actual building of the Institute and helped keep the Institute afloat during the Great Depression.

Wikipedia: Kaiser Wilhelm Institute of Anthropology, Human Heredity, and Eugenics (EN)

The Henry Ford Building is one of the representative buildings of Freie Universität Berlin (FU). It was built between 1952 and 1954 according to plans by the architects Franz-Heinrich Sobotka and Gustav Müller (1906–1987).

Wikipedia: Henry-Ford-Bau (DE), Website

The Archive of the Max Planck Society is an archive founded in 1975 in the Berlin district of Dahlem. Its task is to centrally secure, collect and index the files of two research organizations: the Max Planck Society (MPG), founded in 1948, and its predecessor institution, the Kaiser Wilhelm Society (KWG), founded in 1911.

Wikipedia: Archiv der Max-Planck-Gesellschaft (DE)

St. Mary's Church of the Evangelical Lutheran St. Mary's Parish in the Independent Evangelical Lutheran Church is located at Riemeisterstraße 10–12 in the Berlin district of Zehlendorf in the district of Steglitz-Zehlendorf. The church building, designed according to plans by the architect Hans Schmidt from Hamburg-Harburg, was completed by the architectural firm Kraul and Jäckel from Hamburg. The architects Manfred F. Manleitner and Erwin Srp, both from Berlin, were commissioned with the local construction management. The church building was consecrated on 18 February 1973 by the later Bishop Gerhard Rost with the assistance of church councillor Matthias Schulz and the then parish priest Jobst Schöne. The parish belongs to the church district of Berlin-Brandenburg.

Wikipedia: St.-Marien-Kirche (Berlin-Zehlendorf) (DE), Website

The Herz-Jesu-Kirche is the parish church of the Catholic parish of the same name in the Berlin district of Zehlendorf in today's district of Steglitz-Zehlendorf. The neo-Gothic church, designed by Christoph Hehl, was consecrated in 1908 and forms a building complex with the rectory. The church with its rectory and parish hall is a listed building.

Wikipedia: Herz-Jesu-Kirche (Berlin-Zehlendorf) (DE), Website, Heritage Website

Today's Protestant village church Zehlendorf stands in the historic core of the Berlin district of Zehlendorf and is one of the more than 50 village churches in Berlin. It was built in 1768 on the site of a medieval fieldstone church first mentioned in 1264. Its octagonal central building represents a very rare type of church among the village churches of the Mark Brandenburg. After the consecration of St. Paul's Church in 1905, no services were held in the village church until 1953. The church is a listed building.

Wikipedia: Dorfkirche Zehlendorf (DE), Website, Url

The Protestant St. Paul's Church in the Berlin district of Zehlendorf was built between 1903 and 1905 according to the plans of Hubert Stier and consecrated on 1 October 1905. The building, whose floor plan is asymmetrical, was built in the forms of Brandenburg brick Gothic made of red bricks. To the east of the church, the rectory was built on the same property, the architectural style of which corresponds to that of the church. The entire complex of church and rectory is a listed building.

Wikipedia: Paulus-Kirche (Berlin-Zehlendorf) (DE), Website, Heritage Website