Crown Princess Mary attended the official opening of the Danish Science Festival 2021 at Nature Centre Amager in Kastrup
Willem-Alexander and Queen Maxima attended the opening of the Koningsspelen 2021 (King’s Games) at the Vlinderslag Child Center in Amersfoort
King Felipe and Queen Letizia of Spain attended the official event at Cervantes Institute in Alcalá de Henares held on the occasion of World Book Day 2021
