The National Shrine of Our Mother of Perpetual Help (also called the Redemptorist church; popularly known as the Baclaran church) is one of the largest churches in the Philippines. The church houses one of the most venerated and celebrated Marian images in the country, called an icon of Our Mother of Perpetual Help, to which miraculous powers and events are ascribed. Religious devotees flock to this sanctuary every Wednesday in what has become popularly known as "Baclaran Day", and participate in a popular Marian novena offered for the Blessed Virgin Mary's reputed miraculous aid and intercession. The icon is one of the two Roman Catholic Novena devotions quite popular in Manila, along with the Black Nazarene in Quiapo.