Seoul, short for Seoul City, was called Hansung in the past. It is the capital of the Republic of Korea, the largest city in the Korean peninsula and one of the major financial capitals in Asia. It is also the center of politics, economics, technology, and culture in the Republic of Korea.

Seoul is located in the middle of Korean peninsula, around the Han River area, in the northwest of the Republic of Korea. Covering a land of 605 square kilometers, it is a city composed of 25 districts and with high population density.