The Beanstalk is an obstacle in various Mario games for Wii. Their latest appearance is in New Super Mario Bros. Wii. When you hit the Question Blocks, a Beanstalk may appear and start going upwards. Mario can climb this if the player wants to. Beanstalks are the opposite of a Warp Pipe. Beanstalks lead to a sky level, while Warp Pipes lead to an underground level. However, it is good to go through Beanstalks, because you never know what surprise is in the sky level.