The church of the Holy Apostles is one of the oldest Christian churches (early 11th century A.D.) in the area of the ancient Greek Agora. It stands a little South of the Stoa of Attalus. A minute church, it has four apses and a narthex with the lower part of the walls built of massive blocks and the upper section in stone masonry, lined with bricks. Sotira Likodimou (Russian Church) This is the largest medieval structure in Athens. It was built in 1031, as part of a Roman Catholic monastery that survived until 1701, on the ruins of Roman Baths, formed an important monastic group, till its destruction from the Turks. The building was restored by Czar Alexander II in the 1850s. It is now used as the Russian Orthodox Church of Athens.It stands in Filellinon str. and belongs to the octagonal style with dome. Map of Athens – Regions – Athens center map – photo gallery Map of Piraeus – Regions – photo gallery Kapnikarea The church of Panagia is built on the ruins of an ancient temple, dedicated to a female goddess, possibly Athena or Demeter.This church stands in the middle of the street, about half way up on Ermou Street, and dates to the end of the 11th century A.D. Originally, it had been built in the cruciform style with dome supported on four pillars. Later, the small porch was added on the southern side and also the chapel on the northern side and the external narthex with the watershed roof on the western side. Church of Saint George Lycabettus   This is a white church situated at the  of Lycabettus Hill, with a spectacular view over Athens. It is said that in ancient times on this site stood the temple of the Akraios Zeus. The exact date of its construction is not known. It can be reached either on foot or by the cable car. The Kaisariani Monastery   The Monastery lies at a short distance to the east of Athens, on a hillside at the foot of Mt. Hymettos. It is enclosed by a high wall with two gates, one on the east and one on the west side. The interior of the church is decorated with wall paintings dated before 1700. Monastery of Daphni   Built in the 11th century, it is one of the finest Byzantine Monasteries around Athens