The Temple of Olympian Zeus is an ancient temple located in Athens, Greece. It was dedicated to Zeus, the king of the Greek gods, and construction began in the 6th century BCE. The temple was completed in the 2nd century CE during the reign of the Roman Emperor Hadrian. Originally, the temple featured 104 colossal columns, of which only 15 remain today. The structure was one of the largest temples in the ancient world, showcasing the grandeur of Hellenistic architecture. It served as a significant religious site and a symbol of the power of the gods in ancient Greek culture.