Rome is about 3 times smaller than Melbourne.

Melbourne (the 27 councils of metropolitan Melbourne, without the Yarra Ranges, Cardinia, Mornington Peninsula and Nillumbik) is approximately 3,915 sq km, while Rome is approximately 1,287 sq km, making Rome 32.88% the size of Melbourne.
Tip: This to-scale comparison of Melbourne vs. Rome uses the Mercator projection, which distorts the size of regions near the poles.
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