Starting at Salzstraße, 48143 Münster, open the Explorial app and enter the 6-digit game code that you received by text and Viator chat message to begin. The route takes you through the compact and beautiful Old Town of Münster, a city famous for its cycling culture, its history, and the 1648 Peace of Westphalia. The first riddles guide you to the Dominikanerkirche, a medieval Dominican church that has served many purposes over the centuries and still stands at the heart of the city. Next, the trail leads you to the Prinzipalmarkt, one of Germany's most beautiful market squares, lined with arcaded stone gables and watched over by the historic town hall where the Peace of Westphalia was signed. From here, the app takes you to St. Paulus Dom, Münster's magnificent Romanesque cathedral, whose astronomical clock and medieval interior make it one of the city's essential stops. Around 2 hours of walking, any group size. A fully charged smartphone with mobile data is required.