Queen Silvia and King Carl XVI Gustaf of Sweden accompanied by German president Joachim Gauck and his partner Daniela Schadt arrive for an official dinner at the Charlottenburg Palace in Berlin, Germany, October 6, 2016. REUTERS/Maja Hitij/Pool 

Queen Silvia and King Carl XVI Gustaf of Sweden accompanied by German president Joachim Gauck and his partner Daniela Schadt pose ahead of an official dinner at the Charlottenburg Palace in Berlin, Germany, October 6, 2016. REUTERS/Maja Hitij/Pool 

Queen Silvia and King Carl XVI Gustaf of Sweden visit the site of the Humboldt Forum in Berlin, Germany, October 5, 2016. REUTERS/John Macdougall/Pool 

Queen Silvia and King Carl XVI Gustaf of Sweden visit the site of the Humboldt Forum in Berlin, Germany, October 5, 2016. REUTERS/John Macdougall/Pool 

King Carl XVI Gustaf (R) of Sweden and Poland's First Lady Anna Komorowska chat during an official dinner organized by Swedish Royalty at Sheraton hotel in Warsaw May 5, 2011. REUTERS/Peter Andrews (POLAND - Tags: POLITICS ROYALS) 

Sweden's King Carl XVI Gustaf looks up during a visit to the Portuguese Parliament in Lisbon May 5, 2008. Sweden's King Carl XVI Gustaf and Queen Silvia are on a three-day official visit to Portugal. REUTERS/Nacho Doce (PORTUGAL) 

King Carl Gustaf XVI (R) of Sweden waits for his wife Queen Silvia (5th L) to cross a small stream as they walk through Walpa Gorge at Kata Tjuta located around 300 Km (186 miles) west of Alice Springs in outback Australia November 11, 2005. The Royal couple are on the fifth day of a week-long state visit to Australia where they will travel to Adelaide, Perth and the Northern Territory. REUTERS/David Gray 

King Carl Gustaf XVI (R) of Sweden walks in front of his wife Queen Silvia (C) as they walk through Walpa Gorge at Kata Tjuta located around 300 Km (186 miles) west of Alice Springs in outback Australia November 11, 2005. The Royal couple are on the fifth day of a week-long state visit to Australia where they will travel to Adelaide, Perth and the Northern Territory. REUTERS/David Gray 

King Carl XVI. Gustaf of Sweden (C) stands with United Nations' Secretary-General Kofi Annan, (2R), Queen Silvia (R), Crown Princess Victoria (L) and Nan Annan before they unveiled a bust of Count Folke Bernadotte at U.N. headquarters in New York, October 13. Bernadotte, from Sweden, was the first U.N. mediator for Palestine and was assassinated in Jerusalem in 1948.

JC/KM/CLH/ 

King Carl XVI. Gustaf of Sweden (L) and United Nations Secretary-General Kofi Annan unvail a bust of Count Folke Bernadotte at U.N. headquarters in New York, October 13. Bernadotte, from Sweden, was the first U.N. mediator for Palestine and was assassinated in Jerusalem in 1948.

JC/JDP 

Swedish King Carl XVI. Gustaf (2nd/R) and Queen Silvia lead the way as Japanese Crown Prince Naruhito and kimono-clad Princess Masako follow them into exhibit rooms at a Tokyo folk crafts museum May 26. The Swedish royals, in Japan on a nine-day private visit, opened a Scandinavian craft exhibit.

JAPAN 

Swedish King Carl XVI. Gustaf leads Japanese Crown Prince Naruhito (L) and Crown Princess Masako (R) to attend the opening ceremony of Scandinavian Sami's craft exhibition at the Japan Folk Crafts Museum in Tokyo May 26. King Carl XVI. Gustaf is in Tokyo on a visit with Queen Silvia.

JAPAN 

Swedish Queen Silvia (R) and Japanese Crown Princess Masako smile as they attend the opening ceremony of a Scandinavian craft exhibition at the Japan Folk Crafts Museum in Tokyo May 26. The queen is in Tokyo for a visit to Japan with King Carl XVI. Gustaf.

JAPAN