Dickenson, ND is less than 300 miles from International Peace Gardens, Dunseith, ND. We were there in mid- July, 2023. After reading about it, we had wanted to go there for a few years and finally made it there this year. It is very peaceful and heart warming. It covers over 3,000 acres with camping available, lakes and many memorials and museums as well as part of the towers from 9-11 attack.
There were not a lot of people making for a great visit, without the crowds. As someone said, if this was located near New York, there would be a lot more people, but ND just does not get that many visitors.
If you go, take your passport or other ID as listed on their website. It is located half in the USA, and half in Canada.
They also have a sense of humor in the rest rooms. See photos below.