PERTH, AUSTRALIA - OCTOBER 31: King Willem-Alexander and Queen Maxima of the Netherlands greet well wishers on arrival at the Shipwreck Galleries on October 31, 2016 in Fremantle, Australia. The Dutch King and Queen are in Perth to commemorate the 400th anniversary of the landing of Dutch explorer Dirk Hartog in Western Australia. (Photo by Paul Kane/Getty Images)
