Temple of the Apostles, Athens
The Christian Temple of the Apostles (Agii Apostoli Solaki, Άγιοι Απόστολοι Σολάκη) since 1000 A.D., in the Southeast corner of Agora. This church along with the Temple of Hephaestus are the only monuments in the Agora to survive intact since their foundation. Agii Apostoli played a significant role in the development of Byzantine architecture being the oldest example of the 'Athenian type' of Byzantine dome in the city. The church contributed to the development of Byzantine architecture by its successful combination of a central plan with a cross-in-square design. It houses several wall frescos.
Credit: CameliaTWU / Flickr