For a long time, the entire religious life of the valley revolved around the church of La Pli/Pieve Marebbe. Once the most important house of prayer in the valley, records state that since the appointment of one Marquardus as the first pastor in 1214, Marebbe has always had its own resident pastor. Records dating back to 1347 list the church as the "parish church of the Virgin Mary of Marebbe".

Today, it is a grand four-naved Baroque church with a particularly beautiful wooden high altar, skilfully carved in Renaissance style in 1636 – at a time when the Black Death raged through the valleys. The centre features a statue of St. Mary of Graces. Both for the population of the Badia valley and many pilgrims from the Pusteria valley, this picturesque temple remains a well-loved and much-visited place of pilgrimage.