25th May » Henry the Navigator is appointed governor of the Order of Christ (Portugal) or Order of Christ.
7th June » Troops of the Republic of Venice capture Udine, ending the independence of the Patriarchal State of Friuli.
7th August » Construction of the dome of Florence Cathedral or Santa Maria del Fiore begins in Florence.
28th October » Beijing is officially designated the capital of the Ming Dynasty on the same year that the Forbidden City, the seat of government, is completed.