There are few thrills in the world that equal looking down from a great height. You’re able to look down on the world, the buildings look like models, the people look like insects. At the same time, one wrong step would send you tumbling inevitably to your doom. There’s a sense of incredible power mixed with a dizzying acknowledgment of your own mortality that only approaching the edge of a vast drop off can provide. Of course, to really get that rush, you’ve gotta go big. Fortunately, there are spots all over the world that are designed to get you up close and personal with breathtaking, heady views. Here, for your consideration, are some of the world’s scariest viewing platforms.