Wittenberg is a city in Germany, located in the state of Saxony-Anhalt. It is historically significant as the place where Martin Luther famously nailed his Ninety-Five Theses to the church door in 1517, marking the beginning of the Protestant Reformation. The city is home to several important sites, including the Castle Church and the Luther House. Today, Wittenberg is recognized for its rich cultural heritage and attracts many visitors interested in its history. The city is also part of the UNESCO World Heritage Site designation, which highlights its importance in the development of modern Christianity and European history.