"Seoul - History, highways and... " a Seoul Travel Page by WStat

With over ten million people, Seoul is South Korea's largest city and one of the most populous and also most polluted cities in the world.

The city is located on the basin of the Han River in the country's northwest. The North Korean border is about 50 km to the north.The city is bordered by eight mountains, as well as the more level lands of the Han River plain and western areas.
The traditional heart of Seoul is the old Joseon Dynasty city, which is now the downtown area, where most palaces, government offices, corporate headquarters, hotels, and traditional markets are located. This area occupies the valley of Cheonggyecheon, a stream that runs from west to east through the valley before emptying into the Han River. For many years, the stream had been covered by concrete, but was recently restored through an urban revival project. To the north of downtown is Bukhan Mountain, and to the south is the smaller Namsan.

The history of Seoul can be traced back as far as 18 BC, when it was established as a settlement in Baekje. It's believed that the Wiryeseong site is in the boundaries of modern day Seoul. It has thereafter been the capital of the Joseon Dynasty. In the Japanese colonization period in the early 20th century, many historical and traditional parts of Seoul were changed. The city was almost entirely destroyed in the Korean War, but an aggressive economic policy in the 1960s and 1970s helped to rebuild the city very rapidly. In the 1990s, some important historical buildings were restored, including Gyeongbokgung, one of the royal palaces of the Joseon dynasty.