Saudi Crown Prince Mohammed bin Salman has received a phone call from South Korean President Yoon Suk Yeol, the Saudi Press Agency reported.
During the call on Thursday, Yoon congratulated the Crown Prince on Saudi Arabia's selection as host of the World Expo 2030 in Riyadh, which was announced on Tuesday, SPA said.
Prince Mohammed thanked Yoon for his congratulations.
Riyadh will host the Expo 2030 world fair, the vote results from 182 members of the Bureau International des Expositions showed on Tuesday.
South Korea's Busan and Italy's Rome were also in the running to host the world fair, a five-yearly event that attracts millions of visitors and billions of dollars in investment.
Riyadh was picked by a majority of 119 out of 165 votes. Busan won 29 and Rome 17.