Tower Bridge is a combined bascule and suspension bridge over the River Thames. It is close to the Tower of London.
The bridge consists of two towers which are tied together at the upper level by means of two horizontal walkways which are designed to withstand the horizontal forces exerted by the suspended sections of the bridge on the landward sides of the towers.
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.