one could build the Eiffel Tower in the middle of Thetford Forest
Indeed XN593.
Myself and a fellow engineering graduate were called into the Sqn Cdr's office on IOT ("What have we done
now?"); and informed that the King of Jordan was coming in two days, we could have two cadet flights, limitless pine poles and rope, barrels, etc, and we were to "Build something impressive".
King Hussein was duly impressed by a mini-version of the Golden Gate bridge - usable! (by very light cadets wearing 2 combat jackets each to look normal, and with rucksacks full of foam
).