Wittenberg | Martin Luther University of Halle-Wittenberg | Dave Wittenberg | Rudolf III, Duke of Saxe-Wittenberg | All Saints' Church, Wittenberg | Wittenberg, Wisconsin | Tornau, Wittenberg | Pretzsch, Wittenberg | Albert of Saxe-Wittenberg, Duke of Lüneburg | Albert III, Duke of Saxe-Wittenberg |
In 1573 he came to Wittenberg, proposing to Johannes Praetorius an approximation of Pi as .