EISENACH, GERMANY - FEBRUARY 07 : King Willem-Alexander and Queen Maxima visit Wartburg Castle during their 4 day visit to Germany on February 07, 2017 in Eisenach, Germany. (Photo by Patrick van Katwijk/Getty Images)
EISENACH, GERMANY - FEBRUARY 07 : King Willem-Alexander and Queen Maxima visit Wartburg Castle during their 4 day visit to Germany on February 07, 2017 in Eisenach, Germany. (Photo by Patrick van Katwijk/Getty Images)