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 Challenge Cup Stakes a trophy on that date. Since inception, the race has been contested at various distances: The Queen Elizabeth II Challenge Cup was a Listed race in 1984 and 1985, a Grade III race in 1986 and 1987, and a Grade II race from 1988 through 1990, after which it became a Grade I event. Time record: (at current miles distance) Queen Elizabeth II Challenge Cup Stakes The Queen Elizabeth II Challenge Cup is an American Thoroughbred horse race for three-year-old fillies held annually since 1984 at Keeneland Race Course near Lexington, Kentucky. Run at a distance of one and one-eighth