Okay kiddo, have you ever heard of Christmas? Well, in Germany and some other places, they celebrate Christmas in a special way by building something called a Weihnachtsberg.
A Weihnachtsberg is like a big mountain made out of wood or other materials. It usually has little houses and scenes from the Christmas story on it, like the stable where Jesus was born and the three wise men traveling.
People can come and look at the Weihnachtsberg and sometimes there are even little figurines that can be moved around to act out the Christmas story. It's like a big, elaborate toy that reminds people of the magic of Christmas.
Some families even have a smaller version of a Weihnachtsberg in their homes, kind of like a Christmas decoration. It's really neat and helps people get into the Christmas spirit.