It was built in the first half of the 14th century by Petr of Vartenberk, the then builder of the castle of Kost. While the church was used by the Jesuits, the northern and western sacristies were added, and it received a barrel vault with lunettes and early Baroque stucco decorations. The most valuable decorations include the paintings of St. Ignatius of Loyola and the Virgin Mary Rušánská, which the Jesuits received from Russia in 1637. Damaged by two fires, the church received Renaissance reconstructions.