TRIER, GERMANY - OCTOBER 11: A child welcomes King Willem-Alexander of The Netherlands with Queen Maxima of The Netherlands upon their arrival at the Porta Nigra, a magnificent 2nd-century Roman city gate, on October 11, 2018 in Trier, Germany. King Willem-Alexander of The Netherlands and Queen Maxima of The Netherlands are on a three-day-visit to Germany. (Photo by Andreas Rentz/Getty Images)
