WHAT A BRILLIANT QUESTION!
I won't talk about greek houses and greek 'megaron' but only for the temples,it's enough I think.
You will be surprised to know that ancient temples were made of wood and clay at first.
What inspired the most known Greek Architecture were a>practical needs and
b>a certain perspective about the gods,the world, the human art.
Example:
The columns that surround the temple: they are the marble representatives of the originally wooden pillars that they used for protecting the walls from the rain. Another explanation: the columns were representing the processions or the guards of the god's statue in the temple.
Something else that is important to know, is that the Greek Temple is full of subtle asymmetries IN ORDER TO BE MORE 'HUMAIN' TO LOOK ALIVE!
If it sounds crazy, I tell you there have been researches about it.
So,f.ex.the columns aren't 100% vertical, but if you expant their sides, they are going to meet each other somewhere. I hope you understand.
The same happens to the ACROCERAMA, to the KIONOKRANA, to the whole building, and it happened deliberately as researches have concluded.
Well,there are so much to write here, I think that cpinatzi should answer (I know why I'm telling this).
Ancient Greek Architecture and EGYPT:
Ancient Greek Architecture has nothing to do with Egypt, it was a 'genuine' GREEK achievement. Egyptian monumental art was very grobe, tried to impress with the volume, just like Minoan Art did (it was influenced by Egypt indeed).
They followed EXACTELY the opposite rules from the Greek Architecture. The columns were thinner on the base and gradualy thicker when reaching at the top, EXACTELY the opposite from Greek Rules.
BUT IT WAS A SPECIFIC PERIOD,PART OF THE ARCHAIC PERIOD,THE ANATOLISOUSA PERIOD, THAT WAS INFLUENCED BY THE EGYPTIAN, ASIAN (MESOPOTAMIA, PERSIA) ART.
It was, as says Brittanica, SCULPTURE (and VASE MOTIVE'S).
Some examples:
http://users.sch.gr/ipap/Ellinikos%20Pol…
http://users.sch.gr/ipap/Ellinikos%20Pol…
http://www.antikmakler.de/catalog/images…
IN THE HISTORY OF ART THERE ISN'T A PERIOD, WHICH DOESN'T INCLUDE INTERACTIONS WITH PREVIOUS OR CONTEMPORARY CIVILISATIONS.
Most people have the opinion that Roman Period stops rapidly and then, all of a sudden, people convert into Christianity and change their Art and methods of expression. It is not at all like that.
Christian Art,f.ex., derives from Roman Art.