The temple is partially reconstructed, but you can still get a good sense of its grandeur. It was originally a large, majestic structure, and it sits on a hill with amazing views of the surrounding landscape and the Mediterranean in the distance. The ruins are really picturesque, especially at sunset.
The temple was actually used in ancient times to honor Juno/Hera, who was the goddess of marriage, women, and family in Greek and Roman mythology. She was also the protector of the city, so the temple likely had both religious and political significance.