The more popular certain places become as tourist destinations, the easier it is to forget how potentially dangerous some of them can be.
For instance, just because a lot of people climb Mount Everest, that doesn't suddenly make it cuddlier than the perilous, unforgiving mountain it really is. I can also remember lots of places where you'd never see me again if I slipped while I was visiting the Grand Canyon.
Still, the world's beautifully treacherous wonders aren't always as obvious as these two. At least, that's what one unfortunate grandma discovered.