ITER, a collaboration of 35 nations, is a scientific experiment which entails
building the world's largest
tokamak in order to help prove the viability of
nuclear fusion power generation.
Big E Engineering to say the least, it is one of the most complex tasks
ever undertaken.
Assembled in southern France from components from around the world,
construction is said to be now 78% complete.
8 minute introductory background on the project :-
https://youtu.be/MP2aV26X-70
4 minute construction overview video here (June 13th 2021) :-
https://youtu.be/WIRdKDMhGUQ
32 minute technical tour here (May 17th 2021) :-
https://youtu.be/cvsj0nqHwic