The CN Tower in Toronto, CA. The glass floor on the 112th story that coaxes imaginings of jumping to your death is, literally, the attraction’s killer feature.
At 1,815 feet, it’s the tallest freestanding structure in this hemisphere and second only to the Burj Dubai on the other side of the world. The CN tower still retains the honor of having the highest observation deck in the world, though. So, it’s literally the highest you can climb without being on a mountain, or a cloud…