- 1906
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The Asaka collateral branch of the Japanese Imperial family is established.
- 1921
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Prince Asaka is given the Shirokane territory.
- 1923
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While studying abroad in France, Prince Asaka is injured a traffic accident. Princess Nobuko travels to France in order to care for him.
- 1933
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The Prince Asaka Residence [now the Tokyo Metropolitan Teien Art Museum] is completed in May.
- 1947–1954
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The residence is borrowed by the government and serves as the official residence for prime ministers Yoshida Shigeru.
- 1955–1974
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The residence is used as the state guesthouse until replaced by the Akasaka State Guesthouse.
- 1983
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The residence opens to the public as the Tokyo Metropolitan Teien Art Museum from October 1.
- 1993
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In March, the main building [the former Prince Asaka Residence] becomes the first structure to be designated an Important Cultural Property by the Tokyo Metropolitan Government.
- 2013
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The museum celebrates the thirtieth anniversary of its opening. Work is completed on the main building and new building.
- 2014
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In November, the museum reopens.
- 2015
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The main building, tearoom, central entrance gate and other elements of the residence are designated as Important Cultural Property.
- 2017
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In November, an elevator was installed in the main building.
