Basilica Shrine of Our Lady of Mondovi

The Santuario di Vicoforte (also known as Santuario Regina Montis Regalis) is a monumental church located in the commune of Vicoforte, province of Cuneo, Piedmont, northern Italy. It is known for having the largest elliptical cupola in the world.

Data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).