The Shrine of Mary, Queen of Peace, Our Lady of EDSA, or more popularly, the EDSA Shrine is a small church of the Roman Catholic Archdiocese of Manila located at the intersection of Ortigas Avenue and Epifanio de los Santos Avenue (EDSA) in Barangay Ugong Norte, Quezon City. The church is also called the Archdiocesan Shrine of Mary, Queen of Peace or Mary, Queen of Peace Quasi-Parish, although these names are seldom used. It is also a declared Important Cultural Property by the National Commission for Culture and the Arts. Built in 1989 on donated land to commemorate the People Power Revolution, the shrine is the site of two peaceful demonstrations that toppled Presidents Ferdinand Marcos (the People Power Revolution or EDSA I) in 1986, and Joseph Estrada (the EDSA Revolution of 2001 or EDSA II). The EDSA Shrine is the northernmost tip of the Ortigas Center, a financial and commercial district occupying large tracts of land in Quezon City, Mandaluyong, and Pasig. History Archbishop Jaime Cardinal Sin proposed the construction of a commemorative shrine two days after the Marcos family went into exile following the People Power Revolution of February 1986 which saw the deposing of President Ferdinand Marcos, the end of his authoritarian regime and the installation of Corazon Aquino as his successor. Sin made the proposal as an act of thanksgiving to the Virgin Mary to whom devout Catholics attribute the success of the peaceful revolution. The concept for a commemorative shrine developed when Sin and Bishop Gabriel Reyes were en route to Camp Aguinaldo to preside a Thanksgiving Mass. At a corner of Epifanio de los Santos and Ortigas Avenues, Reyes pointed out to Sin the site where a group of protesters, which included Catholic religious sisters, offered flowers to soldiers during the revolution. At an empty lot nearby stood two billboards that featured advertisements by the Family Rosary Crusade. The billboards showed the image of the Virgin Mary along with the slogans "The family that prays together stays together" and "A world at prayer is a world at peace". The two clergymen concluded that the success of the revolution was a miracle that could be attributed to the intercession of the Virgin Mary. They compared the EDSA event to the success of the Battle of Lepanto and Battles of La Naval de Manila which also both ended in victories for the Catholic belligerents (i.e., the