A stock market speculator builds one of the most beautiful castles on the Rhine and never moves in. A cleaning team finds two priceless relic gardens in Münsterland. Odysseus stands on a sea monster in a 1000-year-old wall frieze in the Teutoburg Forest. These and other stories have puzzled researchers for decades. Here in North Rhine-Westphalia, the walls of palaces, castles and monasteries have a lot to tell. History comes alive again! Let's go on a short trip that takes you deep into the past.