The Basilica of Sant'Ambrogio, with its ancient Romanesque architecture, stands as a testament to Milan's rich religious and cultural history. Founded by St. Ambrose in the 4th century, it was originally named Basilica Martyrum in honor of the martyrs of the Roman persecutions buried there. Over the centuries, the basilica has been a pivotal site for the Christian community, undergoing several restorations to reach its current form. Today, it not only serves as a place of worship but also houses a wealth of art and historical archives, reflecting its enduring legacy in the heart of Milan.