According to legend, long ago, the godly son Hwanung was looking down at the Korean Peninsula from the sky.
Hoping to save the confused land of animals and humans, he opened up the sky, and came down to land to lay foundations for Gojoseon , the oldest dynasty in Korean history.
And today, Gaecheonjeol, also known as the National Foundation Day, commemorates that milestone moment.
Some 3,000 attendees have gathered here at the Sejong Center for the Performing Arts to mark the occasion.
The event kicked off with the solemn salutation to the national flag Taegeukgi , followed by the national anthem Aegukga that was performed by popera singers and youth choir members.
Prime Minister Hwang Kyo-ahn was also in attendance to give a congratulatory message.
"Dear citizens, we need a 'new rise' for Korea, based on the achievements made since our liberation from Japanese colonial rule 70 years ago."
Finishing off the Gaecheonjeol song, the participants gave their all for the three cheers of "Mansae", each one dedicated to the Republic of Korea, national harmony, and peaceful reunification.
"Peaceful reunification, Mansae "
A grand orchestra of traditional drums, a flowery fan dance, and more musical performances celebrated Gaecheonjeol, with hopes to heighten Korea's standing in the world.
Lee Soo-eun, Arirang News.