Leipzig, Eisleben, Wittenberg, are all a hop on a train, a skip past the countryside, and a step down onto the platform away from Halle, and all historically significant for the Reformation in the 16th century. Martin Luther visited frequently to lecture in the University of Halle where he was a professor, he also gave sermons in the Marktkirche.
Marktplatz 
Marktkirche
I visited Halle on my trip to retrace the last steps of Martin Luther, he fell sick on the way to Halle, gave his last sermon in town and died after he reached his birthplace – Eisleben. Halle has more to offer than Wikipedia suggests; apart from having a rich history, it is also home to one of three DB railway museums in Germany (the other ones are in Nuremberg and Koblenz). As a railway fan, I could not miss this attraction, but it is only open twenty hours a week.
There’s an art museum in the famous Moritzburg castle that was once involved in the Thirty Years War in the 17th century. The University of Halle, now the Martin Luther University has an expansive campus on the edge of the town housed in a mix of modern and 18th century buildings.
Moritzburg 
Händelhaus
If you like music, pay a visit to the Händelhaus where you can learn all about the life of Georg Friedrich Händel. There are also pretty buildings in the area ranging from Baroque to Renaissance. If you like history, Reinhard Heydrich was also born here, he was once the chief of Interpol and the general that orchestrated the extermination of the Jews.
