The Prince of Wales will hold talks with the prime minister of Romania as his nine-day tour of Europe continues.
Charles, who arrived in the Romanian capital Bucharest on Wednesday, will sit down with Sorin Grindeanu as the first full day of his visit to the country begins.
On Tuesday, the heir to the throne pledged Britain's special relationship with Romania will endure as the UK formally began to sever ties with the EU.
Charles, who has close ties with the country, reaffirmed his and Britain's friendship with Romania and its people on the day Article 50 was triggered, starting the formal process of Brexit.
Speaking after a bilateral meeting with Romania's president Klaus Iohannis in Bucharest, the Prince said: "It means a very great deal to me to have built a special partnership with Romania.'
"I know that the United Kingdom has also built a very deep and special partnership with your nation. I know that will endure, as will my own.''
Charles, patron of the FARA Foundation, will visit an orphanage run by the charity which transforms the lives of vulnerable and traumatised children and young people.
He will also have tea with the Romanian royal family before attending a reception with individuals who have contributed to Anglo-Romanian relations.
His nine-day tour includes trips to Italy and Austria, with Camilla joining the last two legs.