Marktl sits at the centre of one of Bavaria's most rewarding corners for day trips. Burghausen, just 20 kilometres south along the Salzach, has the longest castle complex in Europe — a kilometre-long chain of courtyards on a ridge above the river. Altötting, 15 kilometres west, is Germany's most important Catholic pilgrimage site and home to the Black Madonna, a tiny gilded chapel that draws millions of visitors each year.