King Juan Carlos I of Spain and his wife, Queen Sofía, are seen here in the Zarzuela Palace, just outside Madrid, where they lived from their marriage in May 1962 until, after allegations of financial impropriety, Juan Carlos's move to Abu Dhabi alone in August 2020.

Juan Carlos I reigned from November 1975 until his abdication on 19 June 2014, but found time in 1969 to kick a football around one of the palace's finely decorated rooms. The palace dates from the early 1630s, but was restored in the early 1960s by architect Diego Méndez.

The king is playing with his daughter, Cristina, and Prince Felipe can be seen just behind a toy bicycle. Out of shot is the couple's other daughter, Elena.

Rare archive photos show the royal families of the world at home