MILAN, ITALY - APRIL 24: A general view of the construction site for 2015 Milan Expo at Rho Fiera on April 24, 2015 in Milan, Italy. (Photo by Matteo Valle/Getty Images)
MILAN, ITALY - APRIL 24: A general view of the construction site for 2015 Milan Expo at Rho Fiera on April 24, 2015 in Milan, Italy. (Photo by Matteo Valle/Getty Images)