Seoul is thought to be the capital of Baekje Kingdom (백제) from 18 BC. At that time, the name of the city was Wiryeseong (). Wiryeseong is thought to be Songpa-gu, Seoul. During Silla Period (신라시대), Hanju (한주) was name of Seoul. During Goryeo Period (고려시대), the name of Seoul was Namgyeong (남경) which means "the south capital". There was a palace of Goryeo Dynasty. Hanyang was name of Seoul in late Goryeo Period. After establishment of Joseon Dynasty, the name of Seoul was Hanseong (한성) and Hanseong became the capital of Joseon Kingdom. From 1910 to 1945 when Korea was under Japanese rule, the name of Seoul was Gyeongseong (경성). Since South Korea was started in 1948, it has been the capital, except for a short time during the Korean War. Seoul became a special city in 1948. April 19th Revolution (4.19혁명) and June Revolution (6월 민주항쟁) was took place in Seoul.