Spain's Crown Prince Felipe, second from left, walks with Princess Letizia, during an official ceremony at the Altar de la Patria, in Mexico City, Tuesday, Sept. 30, 2008.
Spain's Crown Prince Felipe, second from left, stands alongside Princess Letizia, left, during an official ceremony at the Altar de la Patria, in Mexico City, Tuesday, Sept. 30, 2008. Prince Felipe and Princess Letizia were on a four-day official visit to Mexico.
Mexico's President Felipe Calderon, left, walks with Spain's Crown Prince Felipe as they review the presidential honor guard during a welcoming ceremony at Los Pinos presidential residence in Mexico City, Monday, Sept. 29, 2008. The Spanish heir was on a four-day official visit to Mexico.
Spain's Crown Prince Felipe waves during a welcoming ceremony at Los Pinos presidential residence in Mexico City, Monday, Sept. 29, 2008.
Spain's Crown Prince Felipe, left, and his wife Princess Letizia, arrive in Mexico City, Sunday, Sept. 28, 2008.
Spain's Crown Prince Felipe, fourth from right in the second row, and Princess Letizia, third from right, second row, are accompanied in the same row by Mexico President Felipe Calderon and his wife Margarita Zavala, center, and Michoacan Gov. Leoney Godoy and his wife, Magdalena Ojeda, as they stand with the children's choir of Morelia at the Conservatory of the Roses, in the city of Morelia, Mexico, Sept. 29, 2008.
Mexico's President of the Senate, Gustavo Madero, left, shakes hands with Spain's Crown Prince Felipe, center, while Princess Letizia looks on, in Mexico City, Tuesday, Sept. 30, 2008.
Spain's Crown Prince Felipe, right, talks to Princess Letizia during the opening ceremony of the Ibero-American Cultural Congress in Mexico City, Wednesday, Oct. 1, 2008.
Spain's Crown Prince Felipe, center in grey suit, makes his way through the crowd with Princess Letizia, below right, during a Mexican rodeo, or charreada, in Mexico City Wednesday, Oct. 2, 2008.
A man wraps the flag of Spain after a presentation to Spain's Crown Prince Felipe and Princess Letizia during a Mexican rodeo or charreada, in Mexico City, Thursday, Oct. 2, 2008.
Denmark
Danish Crown Prince Frederik, left, and Crown Princess Mary, right, visit the Troyan monastery near the village of Oreshak, east of the Bulgarian capital Sofia, Wednesday, Sept. 17, 2008. The royal couple arrived on a three-day official visit to Bulgaria.
Danish Crown Prince Frederik, second left, and Crown Princess Mary, left, pose for a photo with Bulgaria's President Georgi Parvanov, second right, and Bulgaria's First Lady Zorka Parvanova, right, in front of the Bulgarian National emblem during a welcoming ceremony at the Presidency building in the capital Sofia, Monday, Sept. 15, 2008.
Danish Crown Prince Frederik, left, and Bulgaria's Prime Minister Sergei Stanishev, right, shake hands in the Bulgarian capital Sofia, Monday, Sept. 15, 2008.
Danish Crown Prince Frederik, right, and Crown Princess Mary, left, visit an exhibition at the National Museum of History in the Bulgarian capital Sofia, Tuesday, Sept. 16, 2008.
Danish Crown Prince Frederik, left, and Crown Princess Mary right, visit the golden domed Alexander Nevski cathedral in the capital Sofia, Monday, Sept. 15, 2008.
Japan
Japan's Princess Takamado, right, arrives at the South America Soccer Confederation's headquarters in Asuncion, Wednesday, Oct. 1, 2008. Princess Takamado is the honorary president of the Japanese Football Association.
Japan's Princess Takamado, right, and Nicolas Leoz, president of South America Soccer Confederation, CSF, walk during their meeting in Asuncion, Wednesday, Oct. 1, 2008. Princess Takamado is the honorary president of the Japanese Football Association.
Saudi Arabia
Saudi Prince Satam bin Abdul Aziz al-Saud prays at the Imam Turki bin Abdullah mosque during Eid al-Fitr morning prayers in Riyadh, Saudi Arabia, Tuesday, Sept. 30, 2008. To Muslims, Eid al-Fitr, marks the end of the holy lunar month of Ramadan and follows a month of fasting between daybreak and sunset.
Great Britian
Britain's Prince Charles, founder of the Prince's Rainforests Project, delivers a speech on the impact of climate change on tropical deforestation, during a dinner in central London, Sept. 10, 2008.
Britain's Prince Charles, left, founder of the Prince's Rainforests Project, talks to broadcaster and naturalist Sir David Attenborough, right, prior to a dinner in central London, Wednesday Sept. 10, 2008. Prince Charles gave a speech on the impact of climate change on tropical deforestation.