A wooden roller coaster is classified as a roller coaster made of steel running ways on top of a wooden track. At the very start of roller coasters, all of them were made out of wood for about the first 80 years, until the tubular steel track was invented and put into most rides. Even though steel tracks have somewhat taken over roller coasters in the world today, there are still plenty being made around the world. Wooden roller coasters are quite popular too. Some of the most famous roller coasters in the world are wooden, just like the two below.