London is about 20 times bigger than Glendale.

Glendale is approximately 79 sq km, while London (including the 32 boroughs of greater London) is approximately 1,572 sq km, making London 1,891% larger than Glendale.
Tip: This to-scale comparison of Glendale vs. London uses the Mercator projection, which distorts the size of regions near the poles.
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