Molesey Lock

Molesey Lock is a lock on the River Thames at East Molesey, Surrey. It is near Hampton Court Palace to the west of London.

The lock was built by the City of London Corporation in 1815 and is the second longest on the river at over 268 ft (82 m). Beside the lock there are rollers for the portage of small boats. On the other side of the large weir sits Ash Island, with a backwater behind it continuing to a smaller weir upstream.

The lock's proximity to Hampton Court and easy access made it a popular venue for spectators in the Victorian era, and the tree-lined lock still attracts large numbers of visitors.

The Wikipedia page is.