Marian tours are among the most popular Catholic pilgrimages.
These religious trips bring tourists to sites where the Virgin Mary is said to have appeared before, delivering holy messages or performing miracles.
The mysticism that surrounds these sites due to the stories of Mary's visionaries is enough to spark interest in any discerning Christian.
Some believe that by visiting the areas where the Virgin Mary appeared, they may be healed from their conditions.
Residual grace of the miracles caused by her presence may still remain in the site.
Showing their devotion may grant the favor of God.
Most Christians, however, join Catholic pilgrimages to Marian sites as an act of veneration.
They come to the sites to pray and ask for the Blessed Mother's intercession.
Some visit the sites to reflect on the messages the Virgin Mary conveyed when she appeared to the visionaries before.
Most of these messages are pleas for peace, unity, and a return to following the teachings of her holy Son, Jesus Christ.
Several of these holy messages are cryptic, carrying warnings of the consequences to failing to heed the Blessed Mother's appeals.
Those who visit pray for forgiveness and promise to live in the light of God from then on.
Thousands of devotees go on Catholic pilgrimages each year to venerate the Blessed Virgin.
Over the past few decades, there have been more than a dozen documented Marian apparitions.
Among the most popular Marian pilgrimage sites are Guadalupe in Mexico City, Lourdes in France, and Fatima in Portugal.