One day in 435 AD a king named Theodosius II decreed that all pagan temples from the Byzantine Period be closed and that includes the Parthenon. Somewhere between the 5th century, the Athena statue (read Parthenon Part 1) was stolen and brought somewhere, where it was destroyed.
It was then changed into a Christian Church. The shape of the church was changed to face the east, the main door facing the West.
Next, it was changed into a mosque when the Ottoman Turks arrived. Although the Parthenon had been changed into a church and then a mosque, the basic shape and structure is still intact. Here's a picture of the Parthenon as a mosque:
https://en.wikipedia.org/wiki/Parthenon |
But now the Parthenon is being restored really carefully. The scientists are pretty confused of how to make it exactly like how the Ancient Greeks did. Now it is still in the process.