In Photos: Japan Imperial Couple celebrate 30 years of marriage

Emperor Naruhito and Empress Masako leave the venue after attending the 73rd national tree-planting festival in Rikuzentakata, Iwate Prefecture, on June 4, 2023. (Mainichi/Yuki Miyatake)

Then Crown Prince Naruhito and then Crown Princess Masako are seen at the start of a procession following their wedding ceremony at the Imperial Palace in Tokyo, on June 9, 1993. (Mainichi/Jun Sekiguchi)

Emperor Naruhito, Empress Masako and their daughter Princess Aiko take a stroll at the Imperial Stock Farm in Takanezawa, Tochigi Prefecture, on April 5, 2023. (Pool photo)

Then Crown Prince Naruhito, then Crown Princess Masako and their daughter Princess Aiko are seen at the Numappara marshland in the city of Kuroiso (now part of the city of Nasushiobara), Tochigi Prefecture, on Aug. 16, 2002. (Mainichi/Kimitaka Takeichi)

Emperor Naruhito, left, proclaims his enthronement during the Sokuirei-Seiden-no-gi enthronement ceremony in the "Matsu-no-Ma" state room of the Imperial Palace in Tokyo, on Oct. 22, 2019. Empress Masako can be seen on the right. (Pool photo)

Emperor Naruhito and Empress Masako visit the Gofukuya district damaged by Typhoon Hagibis in the town of Marumori, Miyagi Prefecture, on Dec. 26, 2019. (Pool photo)

Emperor Naruhito, Empress Masako and their daughter Princess Aiko pose for a photo in front of cocoons at the Momijiyama Imperial Cocoonery in the Imperial Palace in Tokyo on May 30, 2023. (Photo courtesy of the Imperial Household Agency)