Towering above Coburg's centre is a story-book medieval fortress, the Veste Coburg. With its triple ring of fortified walls, it’s one of the most impressive fortresses in Germany, though it attracts few foreign visitors. It houses the vast collection of the Kunstsammlungen, with works by star painters such as Rembrandt, Dürer and Cranach the Elder. The elaborate Jagdintarsien-Zimmer (Hunting Marquetry Room) is a superlative example of carved woodwork.
Protestant reformer Martin Luther, hoping to escape an imperial ban, sought refuge at the fortress in 1530. His former quarters have a writing desk and, in keeping with the Reformation, a rather plain bed.