Japan's Prince Akishino and his daughter Princess Mako on Sunday visited a farm raising rare pigs in Bugac, southern Hungary, during their private trip to conduct livestock research in the prince's field of interest.

The two took a horse-drawn buggy tour of the farm in a national park in Bugac, southeast of Budapest. After seeing a shepherding exhibition, they observed a Mangalitsa pig, a hairy Hungarian breed designated as a national treasure.

Prince Akishino, the second son of Emperor Akihito, who has made research on livestock his lifework, looked closely at the pig and asked questions on its features and raising methods.

As Hungary boasts rare pig and cow species, he has long been interested in visiting the country.

Prince Akishino, Princess Mako visit Hungary farm

On Saturday, the prince and daughter visited a folk museum in the capital that showcases traditional clothes, household items and agricultural equipment. The princess, who has been engaged in museum studies research, showed her interest in pottery used for keeping wine.

As Princess Mako, the eldest granddaughter of the emperor, is set to announce her engagement with her long time boyfriend Kei Komuro on Sept. 3, the visit to Hungary could be her last overseas trip with her father while she is still single.

The two are expected to return home together on Wednesday.