Saints Sergius and Bacchus Church, sometimes referred to as Abu Serga, dates back to the 4
th century and is one of the oldest churches in
Cairo. The church itself is dedicated to two Christian martyrs, and later saints, Sergius and Bacchus, who were killed in the 4
th century for practicing the Christian faith. But the real gem to this church is the site it is built on. When you take a tour of the inside of the Church, you'll be permitted to walk down into the cellar area where the Holy Family - Mary, Joseph, and infant Jesus - stayed for three months when they fled to Egypt.