Escalators come in lots of varieties. While looking for more information about the stairs above, I stumbled upon a great article about escalators in the WebUrbanist site, which is one of my favorite sites altogether! Take a look here: http://weburbanist.com/2010/06/20/attracting-stairs-10-extremely-elevating-escalators/ and you'll see the longest, the shortest, and the highest, as well as escalators that curve and ones that are built for bicycles!
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