Almost everyone knows it: the story of a monk named Martin, who nailed his 99 theses to a large gate. In 2017, 500 years had passed since then. Time to celebrate. Why and how, with whom and where, events and projects are documented in this picture book. On proud 364 pages, it tells of the colorful diversity, current relevance and a contemporary perspective of the Reformation – both in terms of content as well as visually.