Netherlands King Willem-Alexander (L) and Spanish King Felipe (2nd L) tour of the test center of the European Space Research and Technology Center (ESTEC) in Noordwijk on April 18, 2024. The Spanish royal couple are on a two-day state visit to the Netherlands. (Photo by Mischa Schoemaker / ANP / AFP) / Netherlands OUT (Photo by MISCHA SCHOEMAKER/ANP/AFP via Getty Images)