Annunciation Greek Orthodox Cathedral is the spiritual home of the largest Eastern Orthodox parish in Houston, Texas. Built in 1950-52 by the Greek community of Houston. From 1967 to 1974, the church was the seat of the Bishop of the 8th Diocesan District of the Greek Orthodox Archdiocese of North and South America. The church provides a variety of ministries and services and houses a number of organizations. It is named for the Annunciation of the Virgin Mary and celebrates its feast day on March 25.