The Crown Princess' travel plans are a small state secret.
Officially, the Spanish royal family is on summer vacation.
The appointment calendar has no entries for the next few days.
But everyone knows that the countdown to the apprenticeship years of the heir to the throne has begun: 15-year-old Leonor is moving from the Zarzuela Palace on the outskirts of Madrid to the medieval St Donat's Castle in Wales.
For two years she will attend the United World College of the Atlantic (UWC Atlantic for short) and take the international high school diploma.
The two-week summer camp for newcomers began there on Monday, and the school year starts at the end of August.
Hans-Christian Rößler
Political correspondent for the Iberian Peninsula and the Maghreb, based in Madrid.
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So far, Leonor and her younger sister Sofía grew up protected and shielded from the public.
Now the future queen is taking her own first steps abroad - and following the example of her father Felipe meticulously: He was the same age when he moved from a Catholic private school to a college in Canada.
The Spanish monarchy, which was rebuilt after the death of the dictator Francisco Franco, is young by European standards.
King Felipe works hard to find a contemporary form and to establish new traditions.
How do you learn to be a queen in the 21st century?
Since he succeeded Juan Carlos on the throne in 2014, he has tried to step out of the long shadow that the affairs and endless corruption allegations against Leonor's grandfather have cast on the royal family. The young Bourbons want to prove useful to Spain - as an innocent modern family who work hard and whose children study hard to prepare for their assignments. But how do you learn to be a queen in the 21st century?
In Madrid it was clear from the start that experience abroad and foreign languages are a matter of course - just like in other royal families.
Two princesses will be going to school in Wales from September: Leonor, officially Princess of Asturias, and Princess Alexia of the Netherlands.
Their father, the Dutch King Willem-Alexander, attended boarding school in the 1980s.
Until a year ago, the Belgian heir to the throne Elisabeth, the daughter of the Belgian King Philippe, was only in homeschooling due to Corona in the end.
Princess in the quadruple room
But the college is not a luxurious academy for future queens. The property near Cardiff once belonged to the American newspaper magnate William Randolph Hearst, who housed Charlie Chaplin, Clark Gable and John F. Kennedy there. Leonor and Alexia have to be content with a four-bed room in the medieval castle, which some reminds of a Harry Potter film. That's not cheap either. As self-payers, the Spanish royal family will have to transfer more than 76,000 euros from their private assets for Leonors both school years. Most students cannot afford this. More than 70 percent in the 18 UWC schools worldwide have a scholarship. They come from 160 nations. Leonor will have classmates in Wales from Syrian refugee families, Lebanon and Africa.These contacts are allegedly just as important to her parents as her daughter's success in school.
Leonor's life will soon change a lot. So far, she and her sister Sofía attended the Catholic private school on the outskirts of the Spanish capital, where her father was already. Sometimes King Felipe himself drove them there from the Zarzuela Palace. At the boarding school, Leonor has to make her own bed in the common room and do her own laundry. On weekdays it is quiet at 9.30 p.m., on weekends at 11 p.m.