Inside the monastery is the church of the Knights with distinctive round domes. The church was built over the remains of an Early Christian basilica. It has four chapels. The outer one was built by Grand Master d’Aubusson and the innermost still has the floor of the original early Christian church with the mosaic fish decoration. Solitude reigns in the cloister at the rear of the church where the monks’ cells are each marked with a plaque, each showing a different flower. The remains in front of the church are those of the Temple of Athena Polias and Zeus Polieus. In front of the temple to Athena is the small underground Byzantine chapel of Agios Georgios whose walls were decorated with frescos by the Knights of St John around the 14th to 15th centuries.