The Church of Sant'Antonio di Padova, or the Church of Sant'Antonino, is a place of worship located in Piazza Mazzini in the "Sottocastello" or "Sottomonatero" district. It overlooks the port in the northern bay area known as Marina Lunga di Lipari. (Entry from the Italian Wikipedia page, CC BY-SA. Location marked by the OpenStreetMap community.)
In the app, check in on site: you earn a point and the AI guide tells you about the place in your language.