Athens is about 5 times bigger than The Hague (Den Haag).

The Hague (Den Haag) (excluding the city's 15.68 sq km of water area) is approximately 82 sq km, while Athens (map shows its 34 named neighbourhoods; the area covers the whole city) is approximately 412 sq km, making Athens 400% larger than The Hague (Den Haag).
Tip: This to-scale comparison of The Hague (Den Haag) vs. Athens uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.