AMSTERDAM, NETHERLANDS - APRIL 28: Queen Maxima of The Netherlands shows guests around the exhibition after the dinner for 150 Dutch people to celebrate King Willem-Alexander's 50th birthday in the Royal Palace on April 28, 2017 in Amsterdam, Netherlands. After the dinner the king and the queen opened the Royal Palace for 50 hours with an exhibition that gives an overview of the Netherlands in the last 50 years. (Photo by Patrick van Katwijk/Getty Images)
