King Charles is heading to Australia for his first royal visit since becoming king. Here's where you might catch a glimpse of royalty.

King Charles, the only British monarch who has spent time living in Australia, arrives on Friday for his inaugural visit to an overseas realm as sovereign, his first major foreign trip since being diagnosed with cancer.

The King and Queen are set to tour Australia and Samoa later this month in Charles’ first visit to both countries since his coronation. Some observers are also wondering whether it might be one of the last royal tours,

Charles, who is head of the Commonwealth, has held “pre-CHOGM” calls with a number of foreign leaders including the King of Malaysia, Julius Maada Bio, president of Sierra Leone, Gaston Browne, Prime Minister of Antigua and Barbuda, and Zambia’s President Hakainde Hichilema.

King Charles III will travel halfway around the world to Samoa this month to take his seat as the head of the Commonwealth and highlight the existential threat climate change poses for Pacific island nations.

It is the first time since Charles assumed the throne that he will visit one of the 14 countries outside the U.K. where he is head of state.