What is the International Eucharistic Congress?
It's essentially a gathering of people to celebrate the Eucharist and reflect on their lives as Christians.
There is national and international Eucharistic congresses. The international event has been described as World Youth Day for people of all ages, and international congresses take place every four years at a location designated by the Pope.
The first was held at Lille in France in 1881. The sixth met in Paris in 1888 -- in the seven year period between the first and the sixth, national congresses had taken place.
The 31st was held in Dublin in 1932, which will also host the 50th. The last was in Quebec in 2008.
The local church or diocese -- in this case Dublin -- organises the event, helped by parishes across the country.
Events include masses, prayer groups, exhibitions, workshops and talks on religion over the course of the week. About 200,000 people are expected to attend.
Irish Independent Supplement