Since 2012, several government agencies have moved from Seoul to Sejong, in an effort to rebalance the country's development.
And in the coming years, Sejong city will see a parliament complex built, after lawmakers passed a law to partially re-locate the National Assembly there.
"It's a truly meaningful day that will be remembered in history. The Sejong parliament complex will become the center of equitable national growth.
The complex will also make life easier,for Sejong-based government officials, who will no longer have to travel up to Seoul for parliamentary events.
"The National Assembly is currently based in Seoul's Yeouido district the city's financial hub.
As you can see, it's a massive site.
But the area set aside for Sejong complex will be roughly twice as big as here."
Construction is expected to take five years.
11 standing committees and the budget committee are likely to move first, effectively bringing many political events to Sejong.
That doesn't mean the city will officially given the title of "administrative capital", like Washington DC in the U.S.
Because, the country's constitutional law says "Seoul as capital is the customary law, thus changing its status is unconstitutional."
But Sejong will likely consolidate itself as the ultimate administrative hub, with 5-thousand workers at the parliament complex, which will also bring in 15-hundred daily visitors.
Two leading presidential candidates from rival parties are also proposing setting up another Blue House office in the city if elected.
In addition to its political significance, Sejong parliament complex is expected to generate 12 billion dollars for the local economy nearly four times the money set to go into building it.
Lee Kyung-eun, Arirang News.