According to a story, Schneider Friedrich Eisenhut, born in Kirchenthumbach, traveled from Vienna to Graz in October 1714. In a robbery called Eisenhut in his despair to the Blessed Mother Mary. He promised to paint the portrait of the Mother of Mercy of Maria Zell in Styria and to install it in a chapel to be built in Kirchenthumbach. As a result, the robbers seized the flight. The history of the mountain church thus begins in 1714 with the construction of a small chapel, which today serves as a sacristy. The foundation stone for today's pretty mountain church was laid in 1753, in 1760 it was inaugurated.
On September 10, 1760, in Regensburg, the celebration permission was granted for the mountain church, but not for the Sundays and holidays, with the exception of the Sunday after the birth of Mary. From that time on the mountain church developed into a much visited and appreciated pilgrimage church. Even today, it is the Kirchenthumbachern dear to heart and it is celebrated annually in early September, the mountain festival. The church services in the morning and the evening procession of lights with preaching and celebration of the Virgin Mary are indispensable to the church theaters and many foreign pilgrims. Likewise, on this day a perfect indulgence can be won.
Worth mentioning is the baroque façade of the building with its four round windows and the Madonna figure inserted into the masonry. As you enter the church, the eye falls immediately on the imposing rococo altar, in which the replica of Our Lady of Maria Zell is integrated, and on the pulpit and the two confessionals, also in Rococo style.