What Took 15 Years And 20000 Tons Of Marble To Build?

What Took 15 Years And 20000 Tons Of Marble To Build? Pericles himself oversaw the building of the Parthenon, at the Acropolis in Athens, which took 15 years to complete. In 431 B.C.E. the Athenian popular assembly declared war on Sparta, which launched the Athenians into the Second Peloponnesian War. What did Pericles build? Pericles