The Church of All Saints in Warsaw is one of the largest churches in Poland. It was designed by Henryk Marconi. Virtually all Polish artists known at that time contributed to its completion in the years 1861-1893. Its neo-Renaissance style refers to the church of St. Guistina in Padua. Originally, All Saints Church consisted of a main church that could accommodate approximately 5,000 worshipers and a smaller church downstairs that could accommodate approximately 3,000 people. Currently, the latter is divided into several compartments. During World War II, All Saints Church found itself within the borders of the Jewish ghetto. Priests associated with the church helped Jews as much as they could. During the war operations of 1939 and 1944, the church was seriously damaged, its interior and most of the works of art inside were destroyed. Conservation work on the ruined church began in 1946. Monumental paintings lost during the war were replaced by paintings by Michael Willman (1630-1706). It was in All Saints Church that Pope John Paul II opened the Eucharistic Congress in 1987.