Santuario di Sant'Antonio is a hillside religious stop above Reggio Calabria, valued as much for its position as for the church itself. From the sanctuary area, the city, the Strait of Messina, and Sicily line up in a way that explains Reggio's geography instantly.
Visit when visibility is good and combine it with the waterfront and old centre below. It remains a devotional site, so keep the visit quiet and dress with the same respect you would bring to any active church.