To gain a plenary indulgence with the indulgenced works of piety and religion by pilgrimage listed above,it is necessary to have the interior disposition of complete detachment from sin, even venial sin, and to fulfill the normal conditions - sacramental Confession, Eucharistic Communion, and prayer for the intention of the Holy Father - most appropriately on the same day that the indulgenced work is performed, or as soon as possible before or after the pious work, if circumstances do not allow for the same day.
Other Shrines in Texas
A listing of other Catholic shrines in the state of Texas:
Basilica of Our Lady of San Juan del Valle - National Shrine, San Juan, Texas
Basilica of the National Shrine of the Little Flower, San Antonio, Texas
Cathedral Shrine of the Virgin of Guadalupe, Dallas, Texas
Our Lady of Guadalupe Parish and Shrine, Midland, Texas
Shrine of St. Padre Pio, San Antonio, Texas