1900-1945 • 1902 - Provincial museum built. • 1903 - opens. • 1904 -
Bismarck Tower erected. • 1907 - , , Klein-Buchholz, , , Mecklenheide, Stöcken, and become part of city. • 1908 - Anti-
noise society formed. • 1911 - (theatre) opens. • 1913 -
New City Hall built in the . • 1914 • Stadthalle built.(
de) • opens. • 1916 •
Kestnergesellschaft (modern art society) formed. • (fountain) installed in the Neustädter Markt. • 1918 • November:
German Revolution of 1918–19. • becomes mayor. • 1919 •
Deutsche Luft-Reederei begins operating its Berlin-Hannover airplane route. • Population: 310,431. • 1920 •
Linden becomes part of city. • established. • 1921 •
Nazi Party branch established. •
Überlandwerke und Straßenbahnen Hannover AG (public transit entity) active. • in use. • 1923 •
German Völkisch Freedom Party branch established. • Nazi '''' weekly newspaper begins publication. • 1924 - becomes mayor. • 1925 •
Arthur Menge becomes mayor. • Population: 422,745. • 1927 -
Botanischer Schulgarten Burg (garden) established. • 1936 -
Maschsee (lake) created. • 1937 - becomes mayor. • 1938 - November:
Kristallnacht pogrom against Jews. • 1939 • September:
Bombing of Hanover in World War II by Allied forces begins. • Population: 472,527. • 1942 - becomes Staatskommissare.(
de) • 1944 • 24 June: begins operating. • 26 June: Hanover-Misburg
subcamp of the
Neuengamme concentration camp established. The prisoners were mostly
Polish women. • 1 September: Hanover-Limmer concentration camp redesignated a subcamp of the Neuengamme concentration camp. • November: established. • becomes Staatskommissare.(
de) • 1945 • January: Hanover-Langenhagen subcamp of Neuengamme dissolved, surviving prisoners relocated to the Hanover-Limmer camp. •
Hannover Messe (trade fair) begins. • 1949 •
Hannoversche Allgemeine Zeitung (newspaper) in publication. • built. • 1950s -
Hannover War Cemetery established. • 1951 - built. • 1952 • (theatre) established. • built. • 1954 •
Niedersachsenstadion (stadium) opens. •
Mannesmann Tower erected. • begins. • rebuilt. • 1965 - begins. • 1965 - Population: 555,228. • 1969 - built. • 1970 -
Norddeutsche Landesbank headquartered in city. • 1972 - becomes mayor. • 1974 - Ahelm, Anderten, Bemerode, Misburg, Vinnhorst, Wettbergen, and become part of city. • 1975 •
Hanover Stadtbahn begins operating. •
Eilenriedehalle built in the . • 1979 -
Sprengel Museum opens. • 1987 - founded. • 1991 -
Hanover–Würzburg high-speed railway built. • 1992 - moves to Bokemahle in . • 2000 • June:
Expo 2000 opens. •
Hanover S-Bahn commuter rail begins operating. ==21st century==