Just a short stroll from the bustling Duomo, you'll find a truly unforgettable sight hidden behind a humble facade. Step inside San Bernardino alle Ossa and through a small corridor to discover the ossuary, a small chapel where the walls are intricately decorated with thousands of human skulls and bones. It's a profoundly moving and macabre work of art that offers a quiet, intense reflection on mortality. This hauntingly beautiful space is one of Milan's most fascinating secrets, leaving a powerful impression long after you've left.