Every four years, Memmingen turns Wallenstein's 1630 stay into one of Europe's largest historical reenactments. Thousands of participants fill the old town with camps, processions and period dress.
It is not useful on an ordinary weekday visit, but it matters to the city's identity. If your dates line up, plan around it; if they do not, the festival still explains why the Thirty Years' War appears so often in local storytelling.