Monastery of Dafni: the most important of the monuments of the Byzantine period in Attica if the monastery of Dafni on the foot of mountain Aegaleo. Its catholic was built over the ruins of a basilica of the 5th century. The location was a worshiping location since ancient times. Pausanias mentions a sanctuary of Dafnios Apollo in the same location. After abandonment it was rebuilt in the 11th century. The dome is positioned in 8 arches that form an octagon that allows the structuring of a bigger dome. The style of the frescoes has a breath of classical ideals with thoughtful expressions. The wing characters in the vases remind victories of ancient times. There is an apparent trend for revival of ancient beauty (kallos) that was a general trend in Byzantine painting of the 12th century AD. In 1990 the monastery was declared by Unesco a monument of world heritage.
Monastery of Kaisariany: it was founded in the end of the 11th century in a location where a settlement existed since Neolithic times. In the 8th BC century a sanctuary was built that was dedicated to goddess Rea and in the 5th century AD a Christian temple. The temple of the monastery is dedicated to the presentation of the Virgin and it is one of the finest Byzantine monuments of Attica built with a Byzantine technique. The inner of the main temple is covered by frescoes of very fine art of the Cretan school of icon painters (16th century AD).
Kapnikarea: this temple is on Ermou Street in the center of Athens and is dedicated to the Presentation of the Virgin and it belongs to the Byzantine period. The ¾ of the temple is a cross shaped basilica with dome and later additions were made to the temple. The dome is one of the nicest and more representative specimens and the name of the temple comes from the name of the “owner” of the temple. A part of the frescoes is a work of Fotis Kontoglou in 1950.
Monastery of Ntaou Pentelis: it was founded in the 10th century AD in the east side of Penteli Mountain. The catholicon has a relief marble temple and the name of the temple came from a corruption of the word ΤΑΩ that is in an inscription of the monastery.
Monastery of Penteli: it was founded in 1578 AD from the bishop Timotheos and it was under the protection of the mother of the Sultan (Valide Soultana), the monastery has large estate fortune. It was renovated in 1858 and rebuilt in a Byzantine rhythm in 1953 in designs of Anastasios Orlandos. There are also some preserved frescoes of the 17th century in the monastery.
Holy trinity: This Russian church was built in the 11th century and for centuries it was the biggest church of Athens. In 1952 it was donated to the Russian community of Athens. Restoration was carried out at the expense of the Russian government.
Monastery of St Efraim: This Byzantine monument is founded in the 10-11th century and was renovated in the period of 1944-45. In the monastery the relic of St Efraim is kept there who was a martyr of the 15th century. The monastery has a small library and works of icon painting and embroidery.