Ever since the Romans first conquered Britain and brought with them new methods of construction for fast travel and sophisticated living, there has been a bridge on the site of the current London Bridge. First built of timber by the marauding Italians, the bridge was eventually replaced with a sturdier stone version that even carried the weight of several buildings atop of it in medieval times, and lasted a good six hundred years despite a few ravaging fires before being super-ceded again.
In the 19th century, "New" London Bridge was re-modeled again in stone by the architect John Rennie and his son. However, over time the bridge began sinking gradually and it was eventually sold to Robert McCulloch in 1968 who transported it to America.
Rumour has it that McCulloch's "New" London Bridge had some rather special features, such as lamps made from the melted down cannons of Napoleon Bonaparte's army... a rather patriotic touch, but not one that the British were too proud to part with in the end.
The bridge was then replaced by sturdier concrete and steel design, which still stands as our modern day London Bridge in the exact spot the Romans built it so many centuries ago. Designed by Lord Holford and his team of engineers Mott, Hay and Anderson, the bridge was officially opened by Queen Elizabeth II in 1973 and remains one of the cities busiest river crossings.