The Church of Abu Serga, also known as St. Sergius and Bacchus Church, is one of the oldest and most important Coptic Orthodox churches in Cairo, Egypt. It is located in the Coptic Quarter of Old Cairo, specifically in the area known as Babylon El-Darag.

The church is believed to have been built upon the spot where the Holy Family, consisting of Mary, Joseph, and the infant Jesus, sought refuge during their flight into Egypt. According to tradition, the Holy Family stayed in a cave underneath the church for a period of time.

The current structure of the Church of Abu Serga dates back to the 10th century, however, the site has a long history of Christian worship. The original church was likely established as early as the 5th century, and it has been subjected to multiple renovations and expansions throughout its existence.

The church features a blend of architectural styles, combining ancient Egyptian, Coptic, Byzantine, and Islamic influences. Its overall design is simple and compact, with thick walls, a central nave, and a small courtyard. The interior is adorned with beautiful Coptic frescoes, which depict biblical scenes and saints.

The Church of Abu Serga is considered a significant pilgrimage site for Coptic Christians and attracts visitors from all over the world. It is an important religious and historical landmark that holds great spiritual and cultural importance to the Coptic community in Egypt.