Rome is around the same size as Saint Petersburg.

Saint Petersburg is approximately 1,439 sq km, while Rome is approximately 1,287 sq km, making Rome 89.46% the size of Saint Petersburg.
Tip: This to-scale comparison of Saint Petersburg vs. Rome 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.