The house where Philipp Melanchthon lived is one of the finest town houses in Wittenberg. It is an architectural gem in the Renaissance style with late-Gothic windows and a vaulted, stepped gable. The three-storey building was erected for Elector Johann Friedrich in 1536. Philipp Melanchthon, his family and their student lodgers lived in the house.

Ad Fontes, which means "to the sources", was a favourite maxim of Philipp Melanchthon and provides the title for the Melanchthon House exhibition. Around 400 historical drawings, prints and paintings document the life and legacy of the great humanist, Luther's closest companion and colleague. The focal point of the exhibition is Melanchthon's study (also the room where he died), which was furnished with items from the period in 1898.

The pretty herb garden behind the house is ideal for a spot of tranquility and contemplation.