Republic City

Republic City is a large metropolis located in the lower areas of a mountainous region, with large bodies of water in the immediate vicinity. The city could be situated on an island, a bay, or a peninsula. The location of Republic City in the World of Avatar is currently unknown.

A modern urban center, it has significant high-rise development and technology has proliferated, with widespread use of automobiles and motorcycles.

During the youth of Avatar Korra, it was host to people from all four nations. It was also suffering from high levels of crime and an anti-bender revolt.

Trivia

 * The concept of Republic City is inspired by several real world past and present locations. This includes Shanghai (circa 1920s), Hong Kong, and Western cities such as New York and Chicago.