7.The Northwest Angle US/Canada
This is a piece of the US that doesn’t share any land border with Minnesota, but it has one with the Canadian state of Manitoba. To get there from Minnesota, you have to either fly in or use a boat. The other option is to cross the border to Canada before crossing back into the US, in which case you can only reach US customs authorities by phone.
The little town has a population of just over 100 as most of it is covered in water and forests. It was the result of a mapping mistake in which the geographer got a whole 150 miles wrong while stating the source of the Mississippi. The town has tried to secede from the US many times because its isolation means it is denied access to essential services on both sides of the border.
8.Penon De Velez De La Gomera Spain/Morocco
This is considered the shortest land border in the world. It is an island that was just a few meters off the coast of Morocco that connected to the continent of Africa in the 1930s when a huge storm swept lots of sand onto it creating a peninsula. It is just one of the seven enclaves of Spanish territories in Morocco, which have been a source of dispute since the 1600s. The small island is occupied only by Spanish military personnel, and the borderline in the sand is marked by a string.