The Westminster Bridge across The Thames opened in London, England.
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Lugano, Switzerland, hosted the first Eurovision Song Contest.
President Arthur and NY Governor Cleveland opened the Brooklyn Bridge.
Leo Delibes' opera 'Le Roi l'a Dit' premiered in Paris at the Opéra-Comique.
The first telegraph message was sent.
The United States and Russia signed the Moscow Treaty, agreeing to limit their nuclear arsenals.