NEW : Brazil returns home after World Youth Day . ` ` From an economic standpoint , it 's amazing , '' Rio de Janeiro 's mayor says . Benedict ended his four-day visit to Madrid on Sunday , with Spain 's King Juan Carlos I and Queen Sofia escorting the Roman Catholic leader to the steps of his outbound jetliner . Brazil also will host the Summer Olympics in 2016 and the World Cup in 2014 . Spaniards protest what they say is the high cost of organizing the event this year in Brazil .
NEW : Brazil returns home after World Youth Day . ` ` From an economic standpoint , it 's amazing , '' Rio de Janeiro 's mayor says . Brazil also will host the Summer Olympics in 2016 and the World Cup in 2014 . Spaniards protest what they say is the high cost of organizing the event this year in Brazil .