This fragment of the old roman London Wall can be found in a courtyard just behind Tower Hill Station. The wall was built between AD190 and 220 and was 3 kilometres long. The base of the wall is some 9 feet wide and 20 foot high.
It appears to be a myth that Robert P. McCulloch thought he was buying this bridge rather than London Bridge back in 1968. A successful businessman, McCulloch would have had enough savvy to know exactly what he was purchasing. In any event, the purchase served to put a hitherto little-known part of Arizona firmly on the map if a London media report is to be believed.