A group of German architects have made a tower of living trees, some over 100 years old. 

Amazing! It's a tower made of trees designed by the Stuttgart architects, in Germany, who wanted to build a huge house in the trees. However, the result is what you see in the photo; a real building made with a living tree base. They never hurt the environment while building the structure but used 100-year-old trees to create a solid base to sustain the building's height.

The idea is that as the trees grow, they will grow around the structure creating one large tree covering all of the building. People will be able to visit the building come the end of September.