Tree adventure park 

If you stopped climbing trees when you became a grown up, now is the chance to recapture that sense of freedom and adventure by teetering in the treetops in these woodland playgrounds.

Similar to the Go Ape franchise in the UK, the tree adventure parks in Europe involve moving from tree to tree via rope bridges, slacklines, zip wires and ladders at dizzying heights and often with more than one leap of faith. It's a great activity for developing teamwork and camaraderie  - perfect for a corporate event where you want a fun day out with a little bit of nerve testing thrown in. Make sure you don't miss the tarzan swing...