World Youth Day (WYD) is the gathering of young people from all over the world with the Pope. It is also a pilgrimage, a celebration of youth, an expression of the universal Church and an intense moment of evangelization for the youth world. Although its Catholic identity is clearly evident, WYD opens its doors to everyone, no matter how close to or distant from the Church they are.
More details on the pilgrimage from Knoxville to WYD in Lisbon, including fundraising information, can be found here.