River Thames Thames Estuary), the river is subject to tidal activity from the North Sea. Before the lock was installed, the river was tidal as far as Staines, about upstream. London, capital of Roman Britain, was established on two hills, now known as Cornhill and Ludgate Hill. These provided a firm base for a trading centre at the lowest possible point on the Thames. A river crossing was built at the site of London Bridge. London Bridge is now used as the basis for published tide tables giving the times of high tide. High tide reaches Putney about 30 minutes later than
Queen Elizabeth II Bridge, Belfast Queen Elizabeth II Bridge, Belfast The Queen Elizabeth ll Bridge is a bridge in Belfast, Northern Ireland, not to be confused with the adjacent Queen's Bridge. It is one of eight bridges over the Lagan in the city. It was built in the 1960s. In 1966 Queen Elizabeth II and Prince Philip opened the "Queen Elizabeth II bridge". Within Belfast City Council there had been disputes over the name of the new bridge, which they had originally wanted to be called "Carson's Bridge". During the visit a brick was dropped from a high building onto the bonnet of the Royal