In LITHUANIA, the Via Regia Route is the main route that leads to the west. It is an ancient, historical route that begins at its most eastern point in Russia and in the West largely coincides with the Way of St James, joining up with it in France with the Via Turonensis pilgrimage route to Compostela. However, initiatives that are strictly Jacobean have been taking place in Lithuania in recent years and the number of Lithuanian pilgrims going to Santiago has grown exponentially: from 12 in 2004 to 726 in 2018. Vilnius is located on one of the branches of the Via Regia Route, and the Church Heritage Museum is in the heart of its old town. Here, in the Church of St Michael, in the mausoleum dedicated to the Sapieha family, the Vilnius Cathedral Treasury, which was kept hidden from before World War II until 1985, is preserved. Using the application, we can see three of its most significant pieces: a 1650 silver-gilt chalice, donated by a beggar, according to an inscription; a silver-gilt and copper Mannerist ciborium, made at the end of the 16th century or in the first quarter of the 17th century, and a silver-gilt reliquary composed of two parts with different chronologies: the base and the knot are from the end of the 17th century, while the cross dates from the beginning of the 19th century.