
The history of Seoul can be traced back as far as 18 BC, although humans have occupied the area now known as Seoul since Paleolithic Age. It has been the capital of numerous kingdoms on the Korean Peninsula since it was established.

Changuimun is one of the Eight Gates of Seoul in the Fortress Wall of Seoul, South Korea, which surrounded the city in the Joseon Dynasty. The gate is also known as Buksomun, and Jahamun (자하문).

Donuimun was one of the Eight Gates of Seoul in the Fortress Wall of Seoul, South Korea, which surrounded the city in the Joseon Dynasty. The gate's historical location is also known as Seodaemun.

The Eight Gates of Seoul are eight historical gates that were located in the Fortress Wall of Seoul, South Korea, which surrounded the city in the Joseon Dynasty. Six of these gates exist today (2018). All eight gates were originally built between 1396 and 1398.

The Fortress Wall of Seoul, or literally the Seoul City Wall is a series of walls made of stone, wood and other materials, built to protect the city of Seoul against invaders. The wall was first built in 1396 to defend and show the boundaries of the city, surrounding Hanyang in the Joseon Dynasty. At that time, it was called Hansung. The wall stretches 18.6 km along the ridge of Seoul's four inner mountains, Bukhansan, Naksan, Namsan, and Inwangsan. At present, a 12-km section of the wall is designated as Historic Site No. 10 (1963) and is protected accordingly, along with the gates, water gates, and signal fire mounds. The northern, eastern, and southern sections of Mt.Nam walls have undergone extensive restoration work, having sustained damage or been entirely destroyed during Japanese imperial rule (1910-1945). The city of Seoul operates the Hanyangdoseong stamp trail tour, which runs along the wall, divided into six trails:Baegak Mounatain Trail Naksan Mounatain Trail Heunginjimun Gate Trail Namsan(Mongmyeoksan) Mountain Trail Sungnyemun Gate Trail Inwangsan Mountain Trail

Gwanghuimun is one of The Eight Gates of Seoul in the Fortress Wall of Seoul, South Korea, which surrounded the city in the Joseon Dynasty. The gate is also known as Namsomun. It was originally called Sugumun "Water Channel Gate."

Gwanghwamun is the main and largest gate of Gyeongbokgung Palace, in Jongno-gu, Seoul, South Korea. It is located at a three-way intersection at the northern end of Sejongno. As a landmark and symbol of Seoul's long history as the capital city during the Joseon Dynasty, the gate has gone through multiple periods of destruction and disrepair. The most recent large-scale restoration work on the gate was finished and it was opened to the public on August 15, 2010.

Gwanghwamun Plaza is a public open space on Sejongno, Jongno-gu, Seoul, South Korea. The plaza was opened on 1 August 2009 by the Seoul Metropolitan Government and is part of the City's plans for environmentally friendly renovation projects such as the Cheonggye Stream and Seoul Plaza. It is also historically significant as the location of royal administrative buildings, known as Yukjo-geori or Street of Six Ministries; and features statues of Admiral Yi Sun-sin of Joseon Dynasty and King Sejong the Great of Joseon. The goal of opening and reconstructing this plaza is to make it a historical and cultural place for the common citizen.

Gyeongbokgung, also known as Gyeongbokgung Palace or Gyeongbok Palace, was the main royal palace of the Joseon dynasty. Built in 1395, it is located in northern Seoul, South Korea. The largest of the Five Grand Palaces built by the Joseon dynasty, Gyeongbokgung served as the home of Kings of the Joseon dynasty, the Kings' households, as well as the government of Joseon.
Gyeonghui Palace was a palace located in Seoul, South Korea. It was one of the "Five Grand Palaces" built by the Joseon Dynasty.

Heunginjimun, literally "Gate of Rising Benevolence" or more commonly known as Dongdaemun, is one of The Eight Gates of Seoul in the Fortress Wall of Seoul, a prominent landmark in central Seoul, South Korea. The Korean name "Dongdaemun" means "Great East Gate," and it was so named because it was the major eastern gate in the wall that surrounded Seoul during the Joseon Dynasty. The gate is located at Jongno 6-ga in Jongno-gu.

The Independence Gate is a memorial gate located in Seoul, South Korea. The gate was built following the First Sino-Japanese War to inspire a spirit of independence away from Korea's previous status as a Chinese tributary state, which was declared by the Treaty of Shimonoseki. It was designed by Soh Jaipil, a Korean political activist.

Namdaemun, officially known as the Sungnyemun, is one of the Eight Gates in the Fortress Wall of Seoul, South Korea, which surrounded the city in the Joseon dynasty. It is located in Jung-gu between Seoul Station and Seoul Plaza, with the historic 24-hour Namdaemun Market next to the gate.

Seoul has been known in the past by the successive names Wiryeseong, Namgyeong, Hanseong or Hanyang. During the period of Japanese occupation (1910–1945), Seoul was referred to by the Japanese exonym Keijō , or Gyeongseong in Korean. After World War II and Korea's liberation, the city took its present name, Seoul, which had been in use since at least 1882, at times concurrently with other names.

Namhansanseong is a historical mountain fortress city 25 km southeast of Seoul, South Korea. It sits approximately 480 m above sea level and is aligned with the ridges of the mountain for maximum defensibility. The fortress, stretching 12 km in length, protects a vast area used as an emergency capital city during the Joseon Dynasty of Korea (1392–1910). The design is based on fortress architecture of East Asia, embodying aspects of four historical cultural styles: the Joseon of Korea, the Azuchi-Momoyama Period of Japan, and Ming and Qing China. It was extensively developed during the 16th to 18th centuries, a period of continuous warfare. The technical development of weaponry and armaments during this period, which saw the use of gunpowder imported from Europe, also greatly influenced the architecture and layout of the fortress. Namhansanseong portrays how the various theories of defense mechanisms in Korea were put to form by combining the everyday living environment with defense objectives. The fortress indicates how Buddhism played an influential role in protecting the state, and it became a symbol of sovereignty in Korea. It stands on the Namhansan, containing fortifications that date back to the 17th century and a number of temples. It can be accessed from Seoul through Namhansanseong Station of Seoul Subway Line 8.

Outer old Seoul or Seongjeosimni was the area of Seoul located outside of the Fortress Wall but within the city limits during the Joseon period. Outer old Seoul corresponds to the island of Yeouido and present-day Seoul city districts of Eunpyeong, Mapo, Seodaemun, Yongsan, Dongdaemun, Seongbuk, Gangbuk, and Seongdong.

Souimun was one of the Eight Gates of Seoul in the Fortress Wall of Seoul, South Korea, which surrounded the city in the Joseon Dynasty. The gate was also known as Seosomun. The gate no longer exists, and there is a marker placed roughly where the gate once stood.

Sukjeongmun is one of the Eight Gates of Seoul in the Fortress Wall of Seoul, South Korea, which surrounded the city in the Joseon Dynasty. The gate is also known as Bukdaemun. It was built north of Seoul behind Gyeongbokgung Place. It was rarely used. It was only used in ceremonious and symbolic functions. In order to visit, identification such as a passport is required for access.

Wiryeseong was the name of two early capitals of Baekje, one of the Three Kingdoms of Korea. Both are believed to have been in the modern-day Seoul area. According to Samguk Sagi, Onjo, the son of Goguryeo's founder Jumong, founded the nation of Sipje on Wiryeseong in 18 BC, while his elder brother Biryu established himself in Michuhol further to the west. The location of Michuhol is usually believed to be present-day Incheon.

The Yeongeunmun was a historical gate located in present Hyeonjeo-dong, Seodaemun-gu, in the northwestern part of Seoul, South Korea. It was built in front of Mohwagwan during the Joseon dynasty where envoys dispatched from Ming and Qing China were received as diplomatic guests.

Yongsan Garrison, meaning "dragon hill garrison," is an area located in the Yongsan District of central Seoul, South Korea. The site served as the headquarters for U.S. military forces stationed in South Korea, known as United States Forces Korea (USFK), and as United States Army Garrison Yongsan (USAG-Yongsan) until 2018, under the supervision of the U.S. Army's Installation Management Command Pacific Region. From 1910 to 1945 it served as headquarters for the Imperial Japanese Army in Korea.