The first is South Korea, the place where the war took place:
The War Memorial (Korean: 전쟁기념관/War Memorial), a national museum located in Seoul, the capital of South Korea, is the largest war-themed memorial in the world today. Although the historical materials of the Korean wars are on display, the content and historical materials of the Korean War are the richest.
The museum is located in the heart of Seoul. Originally the base of the Japanese army when Korea became a Japanese colony, it became the Yongsan base for U.S. troops stationed in Korea after the end of the Korean War, and later the U.S. military withdrew to become the headquarters of the Republic of Korea Army. It was not converted to civilian use until the 1980s, and construction began in September 1990 as a museum, which was completed in December 1993 and officially opened on June 10, 1994.

At the entrance to the Korean War Memorial there is a statue with the theme of the Korean War. Based on the true story of the Korean War, the sculpture depicts a pair of brothers (the older brother is a South Korean officer and the younger brother is a Korean People's Army soldier) as a fighting opponent, and they accidentally meet and hug each other in the war. The two brothers stand on a divided hemisphere in the middle, symbolizing the north-south division of the Korean Peninsula. Later, based on this story, he created a movie "Tai Chi Flag Flying".
The United Nations Memorial Cemetery (Korean: 재한유엔기념공원, English: United Nations Memorial Cemetery in Korea, abbreviated as UNMCK) is located in Busan, South Korea, and is used to bury fallen soldiers of the United Nations Army during the War to Resist US Aggression and Aid Korea. The cemetery is also the only United Nations cemetery in the world, with an area of 14 hectares and 2,300 graves, located in 22 areas classified by the nationality of the fallen soldiers, including Canada, France, the United Kingdom and the United States.
After the signing of the Korean Armistice Agreement in 1953, the United Nations army and the volunteer army and the Korean army sought each other to retrieve the remains of soldiers buried in their respective territories, and between September and October 1954, the remains of about 14,000 chinese and North Korean soldiers were exchanged for the remains of 4,219 United Nations soldiers in Korea, of which 2,944 were American soldiers. Some of them were buried in the United Nations War Cemetery, but it was called the Don Valley Cemetery at the time.
On 15 December 1955, the United Nations General Assembly adopted resolution 977 (X), officially becoming a United Nations Memorial Cemetery, which was handed over to the International Management Committee of the United Nations Memorial Cemetery (CUNMCK) in 1973, which was composed of representatives from 11 countries where fallen soldiers were buried in the cemetery.
A wall of Remembrance was built in the cemetery in 2006 with 140 marble slabs inscribed with the names of 40,896 soldiers who died or disappeared during the war.
United States:
The Korean War Veterans Memorial was built in Washington, D.C., in 1995 to honor U.S. and United Nations soldiers killed in the Korean War.
The United States first built the Vietnam War Memorial Wall, and after the completion of the construction, Congress proposed that a memorial building of the Korean War should also be built, so the United States Congress authorized the U.S. War Memorial Committee to be responsible for the construction of such a memorial (Public Law 99-572 was filed on October 28, 1986). Then-President Ronald Reagan immediately designated an advisory panel on the Korean War Memorial Wall to help with the effort. In September 1988, the U.S. War Memorial Board approved the southwest side of ash Woods Lincoln Memorial hall in National Mall, Washington, D.C., where the planned memorial wall is located. President George H.W. Bush laid the foundation stone for the memorial on June 14, 1992. On July 27, 1995, the 42nd anniversary of the Korean Armistice, President Clinton and South Korean President Kim Young-sam attended the unveiling.
In fact, in the end, it is not a monument that is built, but a small memorial park. Built in a triangular inner wall of about 50 meters long and 20 centimeters thick, the monument was built of black granite from the California river, which brought more than 100 tons of Academy Black, and presented more than 2,500 photographs or archival photographs on the walls in a sandblasted manner.
In the inner triangle are 19 statues of American soldiers made of stainless steel designed by Frank Gaylord, each larger than its true size and weighing about 500 kilograms each. The 19 statues represent the various branches of the U.S. military, of which 14 are dressed for the U.S. Army, three are dressed for the U.S. Marine Corps, and one is a Navy medical officer and an Air Force observer. Reflecting the 19 statues on the black granite wall, 38 soldiers will appear, representing the 38th parallel north latitude. On the north side of the statue is a channel that forms a triangle on one side. The granite wall on the south side forms the second side of the triangle, and the third side is facing the Lincoln Memorial, which is an open gap.
At the end is a shallow black granite pool with a diameter of 9 meters, inscribed with the number of dead, injured, missing and imprisoned, and inscribed "Our country is proud of those who resisted in order to recruit countries and peoples whom he/she never knew." Another granite wall reads "Freedom is not free."
Next to the monument next to the pool is a breakdown of the number of soldiers killed:
Deaths — United States: 54,246, United Nations (including South Korean troops): 628,833
Wounded — United States: 103,284, United Nations: 1,064,453.
Prisoner — United States: 7,140, United Nations: 92,970.
Missing — United States: 8,177, United Nations: 470,267.
There is also an unofficial Korean War memorial in the United States.
The University of Pennsylvania-Philadelphia has a Philadelphia Korean War Memorial that commemorates more than 600 servicemen from the Philadelphia area who died or disappeared in the Korean War. The monument is owned by the city of Philadelphia and leased to a nonprofit organization called Friends of the Korean War Memorial in Philadelphia, headquartered in Philadelphia.
The central section of the monument includes four 16-foot-tall (4.9 m) tall black granite columns that list all the casualties of the Korean War in the Philadelphia area who were killed, missing, or taken prisoner of war during the war, but who did not return after the war and were presumed dead.
United Kingdom:
The Korean War Memorial in London, located in Victoria Embankment Gardens in central London, between the River Thames on the east side and the British Ministry of Defence building on the west side,[1] was donated by the Government of the Republic of Korea and laid on 5 November 2013 and inaugurated on 3 December 2014
The monument contains a stone tower facing east and a statue of a British soldier. The British army statue is located in front of the tower, created by Scottish sculptor Philip Jackson, and is about 3.1 meters high and cast in bronze. Clad in a battle robe, a rifle over his shoulder, and a steel helmet, the statue bows his head in mourning for his fallen comrades. In order to reflect the cold environment of the battlefield of the War to Resist US Aggression and Aid Korea, the attire on the body was arranged as winter clothes. The cornerstone at the soldier's feet is written in The following words in Korean and English:
Thank you for the lives of british soldiers for defending freedom and democracy in South Korea
With gratitude for the sacrifices made by the British Armed Forces in defence of freedom and democracy in the Republic of Korea
Chinese Translation: Thanks to the British Army for the sacrifices made to defend the freedom and democracy of the Republic of Korea
France
Place du Bataillon-Français-de-l'ONU-en-Corée is a square in Paris, France, located in the Saint-Germains district of the city's 4th arrondissement, named after the French Battalion of the United Nations Army that fought in South Korea during the War to Resist US Aggression and Aid Korea from 1950 to 1953, and was named in 1984 by order of the Paris municipal authorities.
Monuments in the square were added in 1989 and carved into the shape of the Korean Peninsula, and in addition to the Korean War, inscriptions commemorate the martyrdom of the troops in Indochina and Algeria.
Australia
Australia's National Korean War Memorial: During the Korean War, Australia sent 17,000 soldiers to the war. After the war, they built the monument on the memorial avenue used in the capital, Canberra, for important ceremonies or military parades.
Canada:
The Canadian Veterans Association erected a memorial to 516 Canadians killed in the Korean War. The monument was completed on July 27, 1997, and is located in Blanton, Medoval Cemetery, Ontario. A total of 26,791 Canadians served in the Korean War that year.