The country's central news agency said it would blow up all the tunnels on the nuclear test ground.
Journalists from other countries, including the United States and South Korea, will be invited to cover the event.
North Korea is "taking technical measures" to dismantle its nuclear test site within the next two weeks, according to state media.
The statement, reported by the South China Morning Post, comes a couple days after President Donald Trump announced that he will meet with North Korean leader Kim Jong Un on June 12.
Indian court rejects plea seeking probe into Sridevi's death
According to Dubai-based Gulf News, the actor was under the influence of alcohol when she fell into the bathtub and drowned. The Supreme Court on Friday dismissed plea seeking independent probe into death of Bollywood actor Sridevi in Dubai.
The UN says seven in 10 North Koreans were relying on food aid, but Kim Jong-un has made it clear that development is a priority. In another sign of improving relations, North Korea this week released three USA citizens who had been imprisoned in the country.
The official told Korean reporters here that the dismantling of North Korea's nuclear weapons program will likely proceed at a speed far faster than under any other similar nuclear accords of the past.
The official also said Kang held a separate meeting with US Defense Secretary James Mattis and stressed that the stationing of US troops in South Korea is an issue of their bilateral alliance but not one to be discussed with North Korea.
In a ceremony between May 23 and 25, journalists from South Korea, China, the US, Britain and Russian Federation will witness the historic event.
Lieberman - Syria: throw the Iranians out of the country
If anything, the lack of restrictions on the US now should serve as a reminder to Iran that it's a bad time to cause trouble. Israel has conducted scores of strikes on Iran and its allies inside Syria, rarely acknowledging them publicly.
Trump's Secretary of State Mike Pompeo said on Friday North Korea can look forward to "a future brimming with peace and prosperity" if it agrees to quickly give up its nuclear weapons.
"From April 21, North Korea will stop nuclear tests and launches of intercontinental ballistic missiles (ICBMs)", KCNA said at the time.
North Korea's six known nuclear tests have taken place in Punggye-ri, a location in the northeastern part of North Korea where a system of tunnels have been dug under Mount Mantap.
Dhawan, Williamson ensure SRH make playoff's in IPL 11; Delhi knocked out
However, Dhawan's knock, which made the target of 188 incredibly easy, grabbed the man of the match performance. His 410 runs at an average of 51.25 have been crucial and the Hyderabad franchise must wrap him in cotton wool.