Modern Description:
The church area is fenced and locked, and the church is normally open to the public only on St. George's eve and day. "The church, in Galatsi on Veikou Avenue, is a two-columned, cross-in-square church with a chapel in its southern side. Thus, two apses exist in its eastern façade, the one of the Sanctuaries of the main church and that of the chapel. The dome of the church is Athenian and the masonry cloisonne. Orlandos has dated the church to the third quarter of the 12th century, just like Megaw in 1931. Pr. Bouras dates it to the same century but a bit later, which might justify the western elements evident not only in the chapel but also in the main church. He also considers that the main church is contemporary to the chapel. The church is decorated with wall paintings - exquisite specimen of the art of the last quarter of the 13th century - which cover the whole interior of the church. Unfortunately, time as well as the atrociousness of people have destroyed a significant part of them, especially on the lower and more accessible parts. The chapel wall paintings are equally important. Characteristic wall paintings are the following: in the narthex we can detect scenes from the martyrium of Hagios Georgios, to whom the church is dedicated. In the main church, saints, anchorites, Apostles Peter and Paul, Hierarchs, the Virgin Mary with archangels, the Ancient of Days, the Evangelist Matthew (the only one preserved intact), Prophets and the Pantokrator in the dome. The latter is not characterized by the classicism of the one in Daphni but by the strength that derives from his features. Furthermore, in the main church we notice the Metamorphosis, the Raising of Lazarus, the Palm Sunday etc. In the chapel we detect the Last Supper, Abraham’s hospitality, the Recumbent Christ etc." (https://byzantineattica.eie.gr/byzantineattica/view.asp?cgpk=490&lg=el&obpk=470&xsl=detail) The gothic cross-vaulting in the side chapel suggests a date after 1204. The narthex is later. The polygonal masonry is reminiscent of a classical grave enclosure.
Wikipedia: https://en.wikipedia.org/wiki/OmorfokklisiaWikidata ID: Q3401807Trismegistos Geo: 364
Info: Byzantine Monuments of Attica 
From the web site Byzantine Monuments of Attica, a project of the Greek National Research Foundation, Institute of Byzantine Studies (NRF/IBS), under the supervision of NRF/IBS director Kriton Chrysochoides, researcher Chryssa Kontogeorgopoulou, with contributions from the archaeologists of the former 1st Ephorate Of Byzantine Antiquities, the University of Athens, the Byzantine and Christian Museum of Athens, and the BSA; texts translated by Olga Lavant.
