The Sanctuary of the Madonna di San Luca is a prominent religious site located on a hilltop just outside of Bologna, Italy. This sanctuary is dedicated to the Madonna di San Luca, a revered icon of the Virgin Mary. The structure is known for its stunning architecture and beautiful frescoes, attracting both pilgrims and tourists alike. The sanctuary is connected to the city by a long portico, which features 666 arches, making it one of the longest in the world. Visitors often walk this portico to reach the sanctuary, enjoying scenic views of the surrounding landscape. The site holds significant cultural and spiritual importance for the local community.