From the Grand Canyon’s Skywalk to the Willis Tower’s Skydeck in Chicago, glass-bottomed observation decks are all the rage. But a developer is taking the glass-bottom game to the next level with a fully enclosed glass slide, the “Skyslide,” affixed to the 70th floor of the US Bank Tower in Los Angeles. Made of 1¼-inch-thick triple-laminated hurricane glass (doesn’t make me feel safer), the slide is 4-feet wide, 3½-feet tall and 45-feet long.