The Cathedral of the Assumption of Mary, also known as the "Royal and Renowned Basilica Cathedral of the Assumption of the Blessed Virgin Mary" (Spanish: Real e Insigne Basílica de la Asunción de la Bienaventurada Virgen María), is a significantly important and historic landmark in León, Nicaragua. The cathedral was awarded World Heritage Site status with the United Nations Educational, Scientific and Cultural Organization (UNESCO). The site's nomination is Nicaragua's third cultural landmark, following the ruins of León Viejo and El Güegüense.