All Saints' Church, commonly referred to as Schlosskirche to distinguish it from the Stadtkirche of St. Mary's – and sometimes known as the Reformation Memorial Church – is a Lutheran church in Wittenberg, Saxony-Anhalt, Germany. It is the site where, according to Philip Melanchthon, the Ninety-five Theses were posted by Martin Luther in 1517, the act that has been called the start of the Protestant Reformation. From 1883 onwards, the church was restored as a memorial site and re-inaugurated on 31 October 1892, 375 years after Luther's posting.
