Abu Serga (Church of St. Sergius and Bacchus) is a Coptic Christian church situated in the Coptic Quarter of Cairo. Dedicated to the saints, Sergius and Bacchus, it is most famous due to the belief that it was built on the site where Joseph, Mary and baby Jesus resided during their time in Egypt.
Abu Serga was thought to have been built in the 4th or 5th century and is one of the oldest Coptic churches in Egypt. One of its most interesting features is the crypt where the Holy
Family were said to have rested. The crypt is 10 meters deep and, when Nile levels are high, is often prone to flooding.
The building is a traditional basilican structure with a nave and two side aisles with a western return aisle. Twelve grand columns stand between the nave and the aisles, eleven of which are made from white marble, while one is made from red granite.
Abu Serga is located in the Old Cairo area of the city in the Coptic Quarter. Mar Girgis is the nearest metro station and is located immediately outside.