Kościan is one of the oldest towns in Greater Poland (Wielkopolska), and the best place to learn about its history is the Dr Henryk Florkowski Regional Museum on Kościan's Market Square. For visitors, we created a web app that runs directly in the phone's browser – with nothing to install. Narrated recordings lead you through the museum's exhibition and introduce its most interesting exhibits as well as the history of the town and the region. The app was built in line with the WCAG 2.1 accessibility standard. The content is available in Polish, English and German, with audio description for blind and partially sighted visitors, and in Polish Sign Language.