The Conversation Circle is a palace in Ragusa, located in the Ibla district, in Piazza del Duomo. Also known as the Knights' Café, it is a rare example of a building specifically constructed for this purpose. (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.