This is the church of Santa Maria delle Grazie in Milan, Italy. The Last Supper by Leonardo da Vinci is inside of this beautiful church. The church of Santa Maria delle Grazie is listed in UNESCO World Heritage Site. The architecture of Santa Maria delle Grazie is one of the must-sees of Milan. The large mural painting is on the wall of the dining hall, but you can't get in and out you need a ticket for the Last Supper. For me, seeing the Last Supper was once-in-a-lifetime experience and it was the highlight of my time in Milan.