Do you remember back in 2012 when London hosted the Olympic Games and The ArcelorMittal Orbit was built? Although it is already a pretty epic and permanent lasting legacy, the new venue space has just submitted a planning application for it to be turned into helter-skelter.  Not only would this be the world’s tallest helter-skelter, it will also be the tallest too. Due to open in 2016, the slide will run from the platforms of the obscure structure right down to the ground level. That’s right! In 2016, you can take a ride in a glass tube and get a brief glimpse…