The The archeological church of the Red Monastery :-
The church of the Red Monastery, the monastery of Saint Pigoul and Saint Bishay, dates to the fourth century.
In form it is a basilica with a long nave, terminating in an elaborate trilobed Sanctuary.
The church is one of the best preserved examples of this type of religious architecture, which is known in Egypt and elsewhere in the Byzantine empire.
Each of the three half circles that from the trefoil sanctuary consists of two ornamented tiers topped by a semidome.
This intricate array of niches and columns comprises the most complete ensemble of architectural sculpture in any church in Egypt.
Originally, the church probably had a pitched in wooden roof.
Today, the sanctuary is covered with a modern dome, and the nave is open to the sky.
The building still functions as a church, in the monastery.