Temples, statues, and structures
Greek architecture was extinct from the end of Mycenaean period which was about 1200 BC to the 7th century BC.
Most of the temples were dedicated to a god or goddess. There was walled rooms that had both statues and gifts which were given to those gods and goddesses. On the exterior there were columns that surrounded the temple. Those columns were originally made of wood but the Greeks discovered marble is more efficient.
They had lifelike statues of the nude male because it showed a relaxed attitude. The faces of the statues were self-confident, their bodies were muscular and smooth. The sculptors tried to achieve a standard look of ideal beauty. Greek artists accomplished this because of their intense observation of real people, especially male athletes. Artist spent hours, days, years, sketching athletes in action. Greeks depicted men in the nude because they regarded mankind as the highest creation of nature. Very commonly figures stand in a contrapposto pose. Contrapposto refers to a quiet relaxed standing pose in which one knee is locked and the other knee slightly bent. The shoulder over the locked knee is lowered a bit and here will be a noticeable pelvis tilt that is opposite to the slant of the shoulders.