The head of the Catholic Church pays his respects to his predecessor Benedict, who resigned from his post in 2013.
Leaders of countries with large Catholic populations have also been paying tribute.
Germany's Chancellor Olaf Scholz described the late pope as "a formative figure of the Catholic Church, a forthright personality and a clever theologian".Reaction to his death in the city was varied - with one resident describing him as "conservative", whilst taking pride from the fact that he was German."I thought when he came to power he would finally bring some fresh air into the Catholic Church and bring an end to celibacy.
While little has changed in terms of doctrinal discussion at the Vatican in the nearly 10 years since he stepped down, what has changed is the spirit of the papacy. In recent years, though he has not appeared to court it, the Pope Emeritus became something of a lightning rod for some opposed to the new Pope.