Mosque Maryam, also known as Muhammad Mosque #2 or Temple #2, is the headquarters of the Nation of Islam, located in Chicago, Illinois. It is at 7351 South Stony Island Avenue in the South Shore neighborhood. The building was originally the Saints Constantine and Helen Greek Orthodox Church before it relocated to suburban Palos Hills. Elijah Muhammad, Farrakhan's predecessor as head for NOI, purchased the building in 1972. Muhammad was lent $3 million from Libyan leader Muammar Gaddafi to convert the former church.