The Sanctuary of Our Lady of Studzieniczna, located in Studzieniczna in the Diocese of Ełk, has a rich history dating back to pagan times when the area was a place of worship. The beginnings of Marian devotion date back to the 17th century, and by 1700, a site renowned for miracles already existed. In 1740, the presence of an image of Our Lady of Częstochowa on an island in Lake Studzieniczne was recorded, contributing to an increase in pilgrimages. In 1772, the hermit Wincenty Morawski settled on the island, building a wooden chapel, and in 1786, the first wooden church was constructed. In the 19th century, Studzieniczna became an important pilgrimage center, regularly attracting thousands of pilgrims, especially during the feast days of Pentecost and St. Anne. These celebrations had both religious and patriotic significance, particularly during the Partitions of Poland and after World War I. In 1847, a new wooden church was erected, and in 1872, a brick chapel dedicated to the Blessed Virgin Mary was built. In 1973, Studzieniczna was incorporated into the city limits of Augustów, and in the 1990s, the sanctuary was visited by prominent figures such as Primate Stefan Wyszyński and Pope John Paul II. An interesting fact is the coronation of the image of Our Lady of Studzieniczna in 1995, which took place in the presence of many distinguished guests. The church in Studzieniczna was entered into the register of historical monuments in 1966, and the entire religious complex was added in 1980. The sanctuary grounds also feature natural monuments, including a towering ash tree and a pedunculate oak. The sanctuary combines rich architectural and cultural aspects, serving as a significant site for both the local community and pilgrims.