
Croatia · 15th Century
In 1411, in the small Croatian town of Ludbreg, a priest was celebrating Mass when he was suddenly assailed by a doubt about whether the wine truly becomes the Blood of Christ during the consecration. This moment of doubt occurred at the most solemn moment of the Mass. As he spoke the words of consecration over the chalice, the wine visibly transformed into Blood before his eyes. The priest was overwhelmed by what he witnessed, his doubt immediately dispelled by this miraculous confirmation. The Blood remained in its transformed state and did not return to the appearance of wine. Church authorities were notified, and after careful investigation, the miracle was officially recognized. The Precious Blood was preserved in a special reliquary, and Ludbreg became a major pilgrimage site. Over the centuries, numerous popes have granted indulgences to pilgrims who venerate the miraculous Blood. Remarkably, the Blood has been preserved in liquid form for over 600 years, an extraordinary feat of preservation that continues to inspire awe. Scientific examinations in modern times have confirmed that the substance is indeed blood. The Shrine of the Precious Blood of Christ in Ludbreg is now one of the most important Eucharistic pilgrimage sites in Croatia and Central Europe. Pope John Paul II visited in 1998, and the site continues to attract pilgrims from around the world.
Scientific examinations in modern times have identified the substance preserved in the reliquary as blood. The preservation of blood in liquid form for over 600 years is scientifically extraordinary and continues to be studied.
This miracle has received explicit recognition from Vatican/papal authority through formal decrees, papal bulls, or official Holy See approval.
The miracle has received Church recognition and approval, as evidenced by the establishment of the shrine and official veneration. In 2011 Pope Benedict XVI sent a formal letter to His Emissary, Cardinal Jozef Tomko, to mark the 600-year anniversary of the event. The letter explicitly refers to the miraculous Eucharistic prodigy that occurred in the parish sanctuary of Ludbreg and notes that many prelates, priests, religious men and women and lay faithful gather each year on the first Sunday of September to reverently recall the relic of the most Precious Blood of Christ, which was transformed from pure wine. The same year Pope Benedict XVI celebrated a Holy Mass in Zagreb for the National Day of Croatian Catholic Families and, in his homily, urged families to draw close to the Sacraments, especially to the Eucharist, as the Church celebrates the 600th anniversary of the Eucharistic miracle of Ludbreg. The letter mentions the participation of the Bishop of Varaždin, Fr. Ivo Mrzljak, who, together with the Cardinal, consulted on the celebration of the anniversary.
Recognition status cross-referenced using Magisterium AI, a third-party tool that searches a corpus of Catholic Church documents. This does not constitute official Church verification.
Official Carlo Acutis exhibition page
PDF documentation with detailed historical account
Comprehensive account with theological reflection
Equestrian Order of the Holy Sepulchre article
Catholic commentary and devotional perspective
General information including the Eucharistic miracle
Travel and cultural perspective on the miracle