Reuters/Mark Blinch
With EdgeWalk at the CN Tower in Toronto, you can go for a walk 1,168 feet off the ground.
You can free climb to staggering heights, get up close and personal with majestic sites, and get views that will take your breath away.
We've put together a collection of 16 adrenaline-pumping tourist activities around the globe, from volcano boarding in Nicaragua to skydiving over Mount Everest.
Note: Some of these activities can be dangerous and should be approached with caution.