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The temple is about 500 m (0.3 mi) south-east of the Acropolis, and about 700 m (0.4 mi) south of the center of Athens, Syntagma Square. Its foundations were laid on the site of an ancient outdoor sanctuary dedicated to Zeus. An earlier temple had stood there, constructed by the tyrant Peisistratus around 550 BC.

The Temple of Olympian Zeus, also known as the Olympieion, is located in the heart of Athens, Greece, southeast of the Acropolis and south of Syntagma Square. It's easily accessible on foot from both locations. From Syntagma Square, it's a short walk south along Amalia Street. From the Acropolis, it's a short walk south, past Hadrian's Arch. The main entrance to the archaeological site is on Leoforos Vasilissis Olgas.
History and Construction:
The temple was dedicated to Zeus, the king of the Olympian gods.
Construction began in the 6th century BC, but it was not completed until the 2nd century AD during the Roman period under Emperor Hadrian.
It was intended to be the largest temple in the ancient world.
The temple was built in the Doric style, with later additions in the Corinthian style.
Location Details:
It is situated approximately 500 meters (0.3 miles) southeast of the Acropolis and 700 meters (0.4 miles) south of Syntagma Square.
The archaeological site is located on Leoforos Vasilissis Olgas Avenue.
It's near other notable landmarks, including Hadrian's Arch, the Panathenaic Stadium, and the National Garden.