Greek Temple Architecture: They were houses--houses for cult statues, storehouses of treasures given to the gods--they were not churches. Worship consisted, by and large, of sacrificial ritual--animal sacrifice: killing animals and eating them, for the most part--and, hence, it was done out of doors. The Internet Ancient History Sourcebook's Accounts of Hellenic Religious Beliefs and Accounts of Personal Religion give additional flavor and context. Greek religious architecture evolved from wooden structures and was tradition bound--they built in stone as they had in wood according to variations on a traditional canon called the orders, first and foremost, the Doric Order , the Ionic Order and the Corinthian Order. Here are some restorations. I love restorations, on paper or models rather than at the actual sites. The first in a series.