LUXEMBOURG, LUXEMBOURG - MAY 11:  (L-R) Xavier Bettel, Prime Minister of Luxembourg and Catherine, Duchess of Cambridge view a cake with a cycling design as they tour a cycling themed festival and unveil a mural of British cyclist Tom Simpson and Luxembourgish cycling legend Charly Gaul during a one day visit to Luxembourg at Place de Clairfontaine on May 11, 2017 in Luxembourg, Luxembourg.  (Photo by Jeff Spicer/Getty Images)