The Ruins of St. Paul's (Portuguese: Ruínas de São Paulo) refer to the façade of what was originally the Cathedral of St. Paul, a 17th century Portuguese cathedral in Macau dedicated to Saint Paul the Apostle. Today, the ruins are one of Macau's most famous landmarks. In 2005, the Ruins of St. Paul were officially enlisted as part of the UNESCO World Heritage Site Historic Centre of Macau.