A lot of people think that travel to North Korea is difficult. Actually is not. It is easy to travel to North Korea. Tourists want to travel to North Korea you have to find travel agency for applying traveling visa for you. Most of travelers book the tour from Beijing agency but the price is very high. If you could find some agencies in Dandong of China where is just next to North Korea and the price will be very reasonable. And also you will get chance to travel around Dandong where is just next to North Korea. There is a river called Yalu Rive just between the two countries. Good swimmer can swim from China to North Korea (but you have to have visa to do that)
You can visit the War to Resist American Aggression and Aid Korea Museum and you can take the boat between the two countries you can see the river bank of North Korea (Xinyizhou) in Dandong.

And a lot of people think that traveling to North Korea is not safe. In fact the tourists in North Korea have been looked after very well. Cause the government of Korea they want to show really good part of the country to the tourists.
Of cause in North Korea there are a lot of rules that you have to follow. You can not bring cell phones or laptop or political reading into the country and please respect their country when you do something or say something. It is very different country. Really closed from the world. People in North Korea they can not get any news from outside the world. It is interesting to experience it.