Acropolis. Athens. Greece. View of the restored Ionic style Temple of Athena Nike (winged victory) on the Acropolis. Designed by Greek architect Kallikrates, the small and elegant Temple was built around 420 BC as an expression of freedom by commemorate the triumph of the united Greek states over the Persians. The Temple was part of the monumental rebuilding and transformation of the Acropolis buildings during the time of Perikles. The Acropolis of Athens and its monuments are a UNESCO World Heritage Site.