I was in the city last week, and found myself wondering (again) about how those huge cranes on construction sites can grow with a new building. (Brought back many child-hood memories of staring into the sky wondering the same thing over the years!)

I found the video below on YouTube, created by a crane manufacturer in Italy. Might be a useful link for school Intranets, to pique the interest of any budding engineers in your school. (Maybe mute the sound before you start playing it!!)