Why was the Parthenon built twice?

The Parthenon was built twice due to its destruction and subsequent reconstruction. The original Parthenon, completed in 432 BC, was a temple dedicated to the goddess Athena but was severely damaged during the Persian invasion in 480 BC. Afterward, a second version was constructed, which aimed to restore its glory and serve as a symbol of Athenian power and cultural achievement. The later renovations and restorations continued into the modern era, reflecting ongoing efforts to preserve this iconic structure.