Which athenian building used the golden mean and the pythagorean theorem?

Answer is: Acropolis of Athens, i ncluding the Parthenon.

Parthenon (447-432 BC) is a temple, on the Athenian Acropolis, dedicated to the goddess Athena.

The golden ratio is a special number approximately equal to 1,618.

Pythagorean theorem states that square of the hypotenuse is equal to the sum of the squares of the other two sides.