Development on the National Sports Complex began in 1963 and was finished in 1964. Designer Vann Molyvann made utilization of huge earthworks to make the stadium, uncovering 500,000 cubic meters of earth to shape the grounds.The stadium may have been worked to have the 1963 Southeast Asian Peninsular Games, yet the amusements were wiped out because of political issues in Cambodia. There was likewise the fleeting GANEFO diversions, that were held in Phnom Penh, Cambodia in November 25~December 6, 1966 and were named 'First Asian GANEFO'. The stadium did play host to appearances by going by dignitaries and state events, and was the home of Cambodia's national games teams.
The stadium had little influence in the 1966 FIFA World Cup. Out of the blue, North Korea confronted Australia in a qualifier. Since North Korea needed conciliatory relations with most nations, finding a suitable venue for the match demonstrated troublesome, until Head of State Norodom Sihanouk, a partner of Kim Il-sung, said the matches could be held in Phnom Penh. The matches pulled in 40,000 fans, with Sihounouk proclaiming half would cheer for Australia, while the other half cheered the Koreans. The matches were hung on 21 November 1965 and on 24 November 1965 with North Korea winning both (6–1 and 3–1). Since South Korea and all African groups had pulled back in dissents against FIFA, North Korea were in this way straightforwardly qualified to the last competition, where they achieved the quarter-final.
Among the offices are Olympic-size pools for swimming and diving and an indoor volleyball court with a limit of up to 8,000, now known as the Olympic Stadium Indoor Arena.
Amid the Khmer Rouge period, the stadium was utilized as an execution site where authorities of the Khmer Republic in the past drove by Lon Nol were killed.
In the decades taking after the Khmer Rouge period, the stadium offices fell into dilapidation. In 2000 the stadium complex was redeveloped by a Taiwanese firm, the Yuanta Group, which restored the stadium additionally redeveloped bundles of the complex into apartment suites and business properties.
Starting 2007, the stadium has come to be a prominent fascination for Phnom Penh inhabitants, who go to day by day exercise sessions, and also football games and different exercises.
In May 2007, the Irish artist Ronan Keating performed in show in the stadium's Indoor Arena, the main show by a noteworthy universal act.
In November–December 2007, the World Organization Volleyball for Disabled held its reality container in the stadium's Indoor Arena, the principal real global brandishing occasion in Cambodia in more than 40 years. Cambodia, seeded fourth on the planet, completed third.
In 2010 the stadium facilitated all the football matches for the Cambodian Premier League, referred to for sponsorship purposes as the Metfone C-League.
The 31st Southeast Asian Games won't be held at the Olympic Stadium, however at another stadium under development in another piece of Phnom Penh.
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