This pilgrimage church, dedicated to St. Oswald, is located at the centre of Seefeld. The first historical records go back to the year 1263. The church only became well-known, however, after the so-called Host Miracle, which happened during a mass in 1384. Because of the increasing number of pilgrims, the church was extended in 1425 on the orders of Duke Friedrich ‘of the empty pocket’ and completed in 1474 under Duke Sigismund ‘rich in coins’. Emperor Charles IV adapted the Renaissance ornaments of the Blood Chapel (part of the Parish Church) to the artistic taste of the Baroque.