Sydney is about 14 times bigger than Geneva.

Geneva (including the canton) is approximately 282 sq km, while Sydney (the 30 councils of metropolitan Sydney, without the Blue Mountains, Hawkesbury, Wollondilly and the Central Coast) is approximately 3,810 sq km, making Sydney 1,251% larger than Geneva.
Tip: This to-scale comparison of Geneva vs. Sydney uses the Mercator projection, which distorts the size of regions near the poles.
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