Nashville is about 2 times bigger than Seoul.

Seoul is approximately 605 sq km, while Nashville (map shows its 91 named neighbourhoods; the area covers the whole city) is approximately 1,232 sq km, making Nashville 104% larger than Seoul.
Tip: This to-scale comparison of Seoul vs. Nashville 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.