Britain's Prince Charles visited Tokyo's prestigious Keio University with his wife Camilla Parker-Bowles on Tuesday on the second day of their visit to Japan.
It was Prince Charles' first visit to Japan in 18 years.
At the university the Prince of Wales and the Duchess of Cornwall watched a display of traditional kabuki theatre and a demonstration of kendo, a Japanese martial art using sticks.
Later in the day the royal couple were scheduled to have dinner with Emperor Akihito and Empress Michiko.
The royal visit to Japan was timed to celebrate the 150th anniversary of the two countries' signing a trade and friendship treaty.
During the visit the royal couple are also scheduled to visit the city of Nara to see the restoration work at the Shosoin treasure house in the Todai temple, as well as the Afan Woodland in Nagano Prefecture where British author and active environmentalist C.W. Nicol is undertaking forest regeneration work.
Prince Charles last visited Japan in 1990 with his late wife Princess Diana, when he represented Queen Elizabeth II at the crowning of Emperor Akihito.
His second wife, the Duchess of Cornwall, is on her first official visit to Japan.
They were due to meet Prime Minister Taro Aso in Tokyo on Wednesday.