Canton Viaduct
Canton Viaduct is a blind arcade cavity wall railroad viaduct built in 1834–35 in Cantonfor the Boston and Providence Railroad (B&P). At its completion, it was the longest and tallest railroad viaduct in the world. Today it is the last surviving viaduct of its kind. It has been in continuous service for 182 years as is currently carries high-speed passenger and freight rail service. -from Wikipedia
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