Kraków's Old Town, inscribed on the UNESCO World Heritage List, is one of the most beautiful places in Europe. We begin our walk in the middle of Europe's largest market square, by the Gothic St Mary's Church, where with a bit of luck you will hear the bugle call (hejnał) played from the tower. The app will guide you past the Cloth Hall and the little Church of St Adalbert, along Floriańska Street to St Florian's Gate and the Barbican, and then back to the Market Square along St John's Street. We end the tour in the courtyard of Collegium Maius – a gem of medieval architecture. You can download the audio guide from the App Store and Google Play.