Artist: I. D. Szabo. Year: 1938. Size: cca. 95 x 63 cm. Condition: Very good, significant paper loss, tears. Vintage Hungarian Art Deco event advertising poster. In the Catholic Church, a eucharistic congress is a gathering of clergy, religious, and laity to bear witness to the Real Presence of Jesus in the Eucharist, which is an important Roman Catholic doctrine. Congresses bring together people from a wide area, and typically involve large open-air Masses, Eucharistic adoration (Blessed Sacrament), and other devotional ceremonies held over several days. Congresses may both refer to National (varies by country) and International Eucharistic Congresses. Paschal Baylon is considered the patron saint of such eucharistic congresses. 34th International Eucharistic Congress. Cardinal Pacelli—later was named Pope Pius XII—served as papal legate to the congress, as he had 4 years earlier. Over 100,000 people from all over the world attended the congress, including 15 cardinals and 330 bishops. The last congress before World War 2.