During this period only the Parthenon, the Propylaea and the Erechtheion still exist from the ancient structures on the Acropolis. The hill was refortified with the addition of towers. The monuments were converted either to churches or to fortresses. The hill changed image depending on who owned the city (Byzantines, Franks, Catalans, Venetians). Herein, the monuments are depicted as they were in around 1450.
The Parthenon had suffered fire damages possibly from the Heruli invasion in 267 A.D. It was in this fire that the roof collapsed and the inner double colonnade was destroyed. In the repairs that followed, it was economically impossible to restore the roof as it was. Therefore, a new one was constructed which only covered the cella leaving the outer colonnade uncovered. After the order to convert the ancient temples into christian churches, the Parthenon was dedicated (possibly in the 6th century) to the Holy Wisdom and later to Mary the Mother of God in Athens (Panagia i Athiniotissa). On the east facade, the entrance was blocked in order to create an arch for the Sanctuary. The interior was richly decorated with frescoes and mosaics, the most famous of which, the one of Mary on the cupola of the Sanctuary. In the first years of the Latin Domination (13th c.), a tower (probably a bell tower) was built in the south part of the opisthonaos and the temple became a catholic church of Notre Dame.
The Propylaea met many different phases of conversion to a fortress. In here, the building is presented in its later form. At a great extent, these fortifications and the towers were still visible until 1835 when were torn down in favour of the neoclassical movement that was dominating Europe at this time.
The Erechtheion had multiple conversions. It begun as a Christian basilica church. After the roof collapsed, new buildings were constructed in the interior, while the rest of the area served as a court.
For other monuments of Medieval Athens click below: