Towns & cities
Megara
City in western Attica, Greece
Wikipedia names Megara as where 1 film or series was filmed; its page links to the sentence that says so. Wikidata records no shoot here yet.

Filmed here, per Wikipedia
Wikipedia says these were filmed in Megara. Each title’s page links to the sentence that says so.
Filming locations nearby
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Towns & cities Elefsina
Greece · 19 km east
Modern city in West Attica, Greece
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Landscapes & nature Saronic Islands
Greece · 26 km south-east
Island group in Greece
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Landscapes & nature
Port of Piraeus
Greece · 26 km east
Chief port of Athens
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Towns & cities
Piraeus
Greece · 27 km east
City and port of Attica region, Greece
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Landscapes & nature
Schiffsmuseum Trokadero Marina
Greece · 31 km east
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Landmarks & buildings
Greek cruiser Georgios Averof
Greece · 31 km east
1910 Pisa-class cruiser