Canadian couple Justin and Anna Williams have traveled to over 100 countries.
Of all the places they've been, the Democratic People's Republic of Korea has been the most memorable by far.
They were shocked to see how heavily tourists are supervised there, as well as how little some North Koreans knew about outside cultures.
"It’s like traveling to a different world," Justin told Business Insider.
They arranged their trip in 2012 through a travel operator with links to the state-owned Korean International Tourist Company.
We've put together a collection of images that show what the experience was like for them, from the tight restrictions they faced to the fascinating sights they saw.
For a full set of images, visit Justin's Instagram page.
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Before their arrival, the couple attended a mandatory briefing session in Beijing, where they were told what they were and were not allowed to do once they arrived in North Korea. They were instructed, for example, to never take pictures of military installations or of statues of Kim Jong Il unless his whole image was in the frame. During the briefing, they met several Americans who said that they were able to take the trip using a similar process.
When they were ready to go, they boarded a Soviet-era Tupolev Tu-204, where in-flight entertainment options included videos showing North Korean soldiers defeating US GIs during the Korean War.
This shot of the capital city of Pyongyang was taken in-flight. Upon landing, their cameras and phones were searched for GPS capability and their passports were seized until their departure. "The scariest part of the trip was knowing that no matter what, it was simply impossible at that point to get out of the country, even if we wanted to," Anna said.
See the rest of the story at Business Insider