Every year we run two fantastic residential trips to Robinwood activity centres in the wilds of England - one for our year 3s and 4s and another for our year 5s and 6s.
These set the standard in challenges with dangerous dungeons, high speed zip wires, Piranha infested pools, puzzling quests and many, many more testing trials. The kids love it (and so do the adults!). Not a moment is lost from start to finish. Take a look at Robinwood website here if you don't believe me.
Places are limited so if you get the chance to go, get in quickly.