Early years award ceremony at the
Royal Palace. In May 2014, Leonor made her first official visit to the
San Javier Air Force base in
Murcia. In October 2014, a wax figure of Leonor was unveiled at the Museo de Cera in Madrid. On 20 May 2015, Leonor received
First Communion as per Catholic custom. In addition, the
Council of Ministers approved the design of her personal
standard and
guidon. Coinciding with the 50th birthday of King Felipe, in January 2018, the King officially gave Leonor the collar of the Golden Fleece in a ceremony at the
Royal Palace of Madrid. festivities. In September 2018, Leonor conducted her first public engagement outside the palace by accompanying her parents to
Covadonga to celebrate the 1300th anniversary of the
Kingdom of Asturias. On 31 October 2018, Leonor gave her first public speech, held at the
Instituto Cervantes in Madrid, where she read the first article of the
Constitution of Spain. Leonor made her first official international trip on 16 July 2022. She did it without the presence of her parents, although she was accompanied by her younger sister,
Infanta Sofía. Together, they attended a match between Spain and Denmark at the
UEFA Women's Euro 2022. In December 2022, Leonor visited the Spanish Red Cross headquarters in Madrid where she met young volunteers of The Red Cross Youth, the youth section of the Spanish Red Cross. In July 2025 she alongside
Infanta Sofía attended the match between England and Spain for the
UEFA Women’s Euro 2025.
Heir's oath during her 18th birthday parade in October 2023. The
Royal Household made public on 22 September 2023 that, as required under the
Spanish Constitution, the princess would swear allegiance to the Constitution and the King upon reaching the age of majority. This declared her as the heir to the Spanish throne. At about 11:00 (CET) on 31 October 2023, her 18th birthday, the ceremony started when the royal family left the Palace of Zarzuela and was escorted by the
Royal Guard through the streets of Madrid. At the
Palacio de las Cortes the royal family received state honors, and the Princess of Asturias took her oath before a joint session of the Spanish Parliament, which received her oath with an ovation of more than four minutes. After this ceremony, the royal family and the main authorities of the country went to the
Royal Palace, where her father, King Felipe, awarded her with the Collar of the
Order of Charles III, the highest civil honor in Spain. After a lunch at palace, the institutional event was over; the Royal Family held a private celebration at the
Royal Palace of El Pardo. The entire paternal and maternal family attended this private event, as well as the Greek royal family, represented by
Queen Anne-Marie and
Princess Alexia and her husband, some members of the
House of Bourbon-Two Sicilies including
Prince Pedro, Duke of Calabria, representatives of the Bulgarian royal family, and
Princess Miriam Ghazi.
Official agenda On 6 January 2024, Leonor attended the
Pascua Militar for the first time, a more than two-centuries-old Spanish military celebration. She attended the event not just as the heir to her father, but also as member of the
Armed Forces. In May 2024, she attended the commemoration of the 40th anniversary of the oath of allegiance to the Spanish flag of the 44th promotion of the General Military Academy. On 12 July 2024, Leonor made her first official foreign visit. She was invited by Portuguese president
Marcelo Rebelo de Sousa to visit the country. In this trip, Leonor, who was accompanied by the Portuguese leader, the Spanish foreign minister,
José Manuel Albares, and the private secretary to the king,
Camilo Villarino, focused her activities on environmental protection and ocean conservation, visiting the
Lisbon Oceanarium and attending a debate on ocean protection. She also visited the
Jerónimos Monastery, where she paid tribute to the poet
Luís de Camões, and later went to
Belém Palace, where delegations from both countries met and had a lunch, and where President Rebelo de Sousa awarded Leonor the Grand Cross of the
Military Order of Christ. On 4 August 2025, Leonor along with her sister
Infanta Sofía attended the annual reception at
Marivent Palace for authorities and relevant citizens of the
Balearic Islands. The reception was also attended by King Felipe VI, Queen Letizia, and Queen Sofía. This event marked the first reception attended by Leonor and Sofía. From 26 to 27 September 2025, Leonor made an official visit —with her parents— to the
Chartered Community of Navarre. The two-day trip was made to celebrate the 600th anniversary of the title of
Princess of Viana, one of the titles of the heir to the Crown —as heir of the ancient
Kingdom of Navarre—. The royal family visited the towns of
Pamplona,
Viana and
Tudela and some of its historical places, such as the
Monastery of Leyre and the
Royal Palace of Olite. In addition, she was the only one to deliver a speech at the Exemplary Town Award in Valdesoto. == Titles, styles, honours and arms ==