Hekatompedon temple

The Hekatompedon or Hekatompedos (Ancient Greek: ἑκατόμπεδος, from ἑκατόν, "hundred", and πούς, "foot"), also known as Ur-Parthenon and H–Architektur, was an ancient Greek temple on the Acropolis of Athens built from limestone in the Archaic period, and it was located in the position of the present Parthenon.

Source: Wikipedia (CC BY-SA 4.0) — https://en.wikipedia.org/wiki/Hekatompedon