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I've come down with some sort of respiratory bug (that won't go away - finally got an appointment to see the Dr this afternoon) - sorry if I don't comment on your beautiful photos for a few days
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St Louis icon - the Gateway Arch (630' - the tallest monument in the US) ---- at the top you can see the little black areas that are actually windows for the viewing platform at the very top.
http://www.nps.gov/jeff
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