King Charles III will visit France and Germany between March 26 and 31 as the Monarch's earliest state visits since taking the throne.
He will be also accompanied by his wife, Queen Consort Camilla.
French President Emmanuel Macron will host a state banquet for the royal couple at the Palace of Versailles.
While, in Germany, the King will address the German parliament, the Bundestag, to be the first British monarch to have this privilege.
It is expected that the King and the Queen Consort will visit memorials to the Allied bombing in Hamburg and to young Jewish refugees who fled the Nazis.
Buckingham Palace says the forthcoming visits will "celebrate Britain's relationship with France and Germany, marking our shared histories, culture and values".
In France, the King and Queen Consort will meet President Macron at the Elysee Palace.
Moreover, the King will address senators and members of the French National Assembly to be the first British Royal Family member to do so.
Queen Consort Camilla will open a Manet and Degas art exhibition at the Musée d'Orsay art gallery with French First Lady Brigitte Macron.