St. Sergius and Bacchus Church, also known as Abu Serga, in Coptic Cairo is one of the oldest Coptic churches in Egypt, dating back to the 4th century.
Sergius and Bacchus were fourth-century Roman Christian soldiers revered as martyrs and saints by the Catholic, Eastern Orthodox and Oriental Orthodox Churches.
The church is dedicated to Sergius and Bacchus, who were soldier-saints martyred during the 4th century in Syria by the Roman Emperor Maximian.
Saints Sergius and Bacchus Church is traditionally believed to have been built on the spot where the Holy Family, Joseph, Mary and the infant Jesus Christ, rested at the end of their journey into Egypt. They may have lived here while Joseph worked at the fortress.
This church is built over a roman cave “Now Holy Crypt” where Holy Family believed to be lived for longest period during their Voyage to Egypt to avoid execution of baby Jesus from King Herold of Jerusalem.
The most interesting feature is the crypt where Mary, Joseph and the infant Jesus are said to have rested. The crypt is 10 meters deep and, when Nile levels are high, is often flooded.
The Church was built in the 4th century and was probably finished during the 5th century. It was burned during the fire of Fustat during the reign of Marwan II around 750. It was then restored during the 8th century, and has been rebuilt and restored constantly since medieval times; however, it is still considered to be a model of the early Coptic churches.