The Ruins of Saint Paul's (Chinese: 大三巴牌坊; Portuguese: Ruínas de São Paulo) are the ruins of a 17th-century Catholic religious complex in Santo António, Macau, China. They include what was originally St. Paul's College and the Church of St. Paul (Igreja de São Paulo) also known as "Mater Dei", a 17th-century Portuguese church dedicated to Saint Paul the Apostle. Today, the ruins are one of Macau's best known landmarks and one of the Seven Wonders of Portuguese Origin in the World. In 2005, they were officially listed as part of the Historic Centre of Macau, a UNESCO World Heritage Site.
