EARLY CHRISTIAN ARCHITECTURE- Reconstructed drawing of the basilica of S. Giovanni in Lateran, Rome, AD 313. It was built from an imperial palace. It consisted of five aisles, the central one was higher because to let the light in from a clerestory. Two rows of 15 huge columns created the colonnade of 75 meter long. The whole structure was covered with a wooden roof. At the end there was a large apse, where the clergy would sit. It is little of the original building left.