Han River (Korea) in the context of "Peninsular Japonic"

Ganghwa Island (Korean: 강화도), also Ganghwado, is an island in Ganghwa County, Incheon, South Korea. It is in the Yellow Sea and in an estuary of the Han River.

The island is separated from Gimpo (on the South Korean mainland) by a narrow channel spanned by two bridges, and from Kaesong (Gaeseong) in North Korea by the main channel of the Han River. It offers some of the closest views in the South of North Korean villages, which can be seen on clear days from less than two kilometers.

The state of Jin (Korean pronunciation: [tɕin]) was a confederacy of statelets which occupied some portion of the southern Korean peninsula from the 4th to 2nd centuries BC, bordering the Korean Kingdom of Gojoseon to the north. Its capital was somewhere south of the Han River. It preceded the Samhan confederacies, each of which claimed to be the successor of the Jin state.

The Seoul Olympic Stadium (Korean: 서울올림픽주경기장; Hanja: 서울올림픽主競技場), a.k.a. Jamsil Olympic Stadium (formerly romanised as Chamshil), is a multi-purpose stadium in Seoul, South Korea. It is the main stadium built for the 1988 Summer Olympics and the 10th Asian Games in 1986. It is the centrepiece of the Seoul Sports Complex in the Songpa District, in the southeast of the city south of the Han River. It is the largest stadium in South Korea.

Gimpo (Korean: 김포; Korean pronunciation: [kim.pʰo]) is a city in Gyeonggi Province, South Korea. It borders Incheon, with which it shares the South Korean side of the Han River estuary, as well as Seoul and the lesser cities of Paju and Goyang. North Korea is across the Han River. The current mayor is Jeong Hayoung [ko]. The city's population of more than 300,000 is made up of more than 71,000 households.

Gimpo International Airport (formerly Kimpo International Airport) used to be located inside the city, but is now part of Seoul. Tertiary educational institutions located in the city include Kimpo College and Joong-ang Seungga University. The city has 27 elementary schools, 12 middle schools, and 8 high schools, including Gimpo Foreign Language High School. Three elementary schools, two middle schools, and two high schools are located in the area of Tongjin.

Samhan, or Three Han (Korean: 삼한; Hanja: 三韓), is the collective name of the Byeonhan, Jinhan, and Mahan confederacies that emerged in the first century BC during the Proto–Three Kingdoms of Korea, or Samhan, period. Located in the central and southern regions of the Korean Peninsula, the Samhan confederacies eventually merged and developed into the Baekje, Gaya, and Silla kingdoms. The name "Samhan" also refers to the Three Kingdoms of Korea.

Sam (三) is a Sino-Korean word meaning "three" and Han is a Korean word meaning "great (one), grand, large, much, many". Han was transliterated into Chinese characters 韓, 漢, 幹, or 刊, but is believed by foreign linguists to be unrelated to the Han in Han Chinese and the Chinese kingdoms and dynasties also called Han (漢) and Han (韓). The word Han is still found in many Korean words such as Hangawi (한가위) — archaic native Korean for Chuseok (秋夕, 추석), Hangaram (한가람) — archaic native Korean for Hangang (漢江, 한강), Hanbat (한밭) — the original place name in native Korean for Daejeon (大田, 대전), hanabi (하나비) — a Joseon-era (Late Middle Korean) word for "grandfather; elderly man" (most often 할아버지 harabeoji in present-day Korean, although speakers of some dialects, especially in North Korea, may still use the form hanabi). Ma means south, Byeon means shining and Jin means east.

The Four Commanderies of Han (Chinese: 漢四郡; pinyin: Hàn-sìjùn; Korean: 한사군; Hanja: 漢四郡; RR: Han-sagun) were Chinese commanderies located in the north of the Korean Peninsula and part of the Liaodong Peninsula from around the end of the second century BC through the early 4th AD, for the longest lasting. The commanderies were set up to control the populace in the former areas of Gojoseon as far south as the Han River, with a core area at Lelang near present-day Pyongyang by Emperor Wu of the Han dynasty in early 2nd century BC after his conquest of Wiman Joseon. As such, these commanderies are seen as Chinese colonies by some scholars. Though disputed by North Korean scholars, Western sources generally describe the Lelang Commandery as existing within the Korean peninsula, and extend the rule of the four commanderies as far south as the Han River. However, South Korean scholars assumed its administrative areas to Pyongan and Hwanghae provinces.

Three of the commanderies fell or retreated westward within a few decades, but the Lelang commandery remained as a center of cultural and economic exchange with successive Chinese dynasties for four centuries. At its administrative center in Lelang, the Chinese built what was in essence a Chinese city where the governor, officials, and merchants, and Chinese colonists lived. Their administration had considerable impact on the life of the native population and ultimately the very fabric of Gojoseon society became eroded. Later, Goguryeo, founded in 37 BCE, began conquering the commanderies and eventually absorbed them into its own territory by the early 4th century AD.

Yongsan District (Korean: 용산구; RR: Yongsan-gu, [jo̞ŋsʰa̠n ku]) is one of the 25 districts of Seoul, South Korea. It has a population of 231,685 (2020) and has a geographic area of 21.87 km (8.44 sq mi), and is divided into 19 dong (administrative neighborhoods). Yongsan is located near Downtown Seoul, on the northern bank of the Han River, bordering the city districts of Jung to the north, Mapo to the west, Yeongdeungpo and Dongjak to the southwest, Seocho and Gangnam District to the southeast, and Seongdong to the east.