In 2016, 4 million visitors travelled to Vatican City for religious events, the Prefecture of the Papal Household announced on Thursday.
The figure represents an increase from 2015, which saw 3.2 million pilgrims, according to figures from the prefecture quoted in The Catholic Herald. In 2014, there were 5.9 million pilgrims.
The year-on-year rise may be due to last Year's Jubilee of Mercy, an 11-month Catholic festival that allowed the faithful to obtain a general pardon for their sins in return for making apilgrimage, which ended on November 20.
The highlight of the year was the canonization in September of Saint Teresa of Calcutta, popularly known during her lifetime as Mother Teresa.
Some 450,000 people attended special audiences with Pope Francis in 2016, the prefecture announced.