Among the treasures are relics of the Twelve Apostles, St. Joseph, St. John the Baptist, St. Mary Magdelene, St. Maria Goretti, St. Therese of Lisieux, St. Francis of Assisi, St. Anthony of Padua, St. Thomas Aquinas, and St. Faustina Kowalski. 

There will also be a fragment of the Veil that belonged to Our Lady and some of the largest remaining pieces of the True Wood of the Cross in the world. 
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For more information, visit the official website:  https://treasuresofthechurch.com