Berlin is about 2.1 times bigger than Corpus Christi.

Corpus Christi (map shows its 7 named neighbourhoods; the area covers the whole city) is approximately 431 sq km, while Berlin is approximately 891 sq km, making Berlin 107% larger than Corpus Christi.
Tip: This to-scale comparison of Corpus Christi vs. Berlin uses the Mercator projection, which distorts the size of regions near the poles.
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