Okay kiddo, have you ever seen a hut made out of metal that looks like a half cylinder? That's called a nissen hut!
During World War I, soldiers needed a place to sleep in a hurry. They came up with a solution: the Nissen hut, named after its inventor, a guy named Peter Nissen. Nissen huts were made out of curved sheets of metal that they could easily put together.
The soldiers would lay the metal sheets out in a line and then bend them into the shape of a half cylinder. They would secure both ends of the metal half cylinder to the ground with wooden or metal pegs, making it very sturdy.
The Nissen hut was great for soldiers because it was quick to put up and take down. It also kept them warm and dry during bad weather. Because of its design, it was also very strong and could hold a lot of weight.
After the war, lots of people started using Nissen huts for all sorts of things. They were great for storing things like grain, tools and even airplanes. Today, people still use them for storage or even as homes!
So, a nissen hut is a type of shelter made from curved sheets of metal that can be quickly put up and taken down. It was invented for soldiers in World War I, but is still used today for storing things or even as a home!