The Schlosskirche, or Castle Church, is a historic church located in Wittenberg, Germany. It is famous for its association with Martin Luther, who is said to have nailed his Ninety-Five Theses to its door in 1517, marking the beginning of the Protestant Reformation. The church features a beautiful Gothic architecture and is part of the Wittenberg's UNESCO World Heritage Site. Inside the Schlosskirche, visitors can find impressive stained glass windows and a notable altar. The church also houses the tombs of Martin Luther and Philip Melanchthon, another key figure in the Reformation. Today, it serves as a significant pilgrimage site for those interested in religious history.