LOS ANGELES -- Japanese architect Toyo Ito, whose buildings have been praised for their fluid beauty and balance between the physical and virtual world, has won the 2013 Pritzker Architecture Prize, the prize's jury announced Sunday.The 71-year-old architect joins such masters as Frank Gehry, I.M. Pei, Tadao Ando, Renzo Piano and Wang Su in receiving the honor that's been called architecture's Nobel Prize.