Erfurt is a jewel-box of a city. Nestled along the banks of the Gera River in the heart of Germany, Erfurt boasts a beautifully preserved medieval center, replete with the storybook spires of a fortress and cathedrals. The Krämerbrücke, or Merchant’s Bridge, is lined with lovely half-timbered houses — which are still in use as cafés and apartments, much as they were centuries ago. In terms of history, Erfurt has strong associations with Martin Luther, the father of the Reformation, who studied and became a monk at the city’s Augustinian Monastery.