What Canal in England is part of the British canal system and has a village with a remarkable series of 21 locks on the canal?
Hatton, Warwickshire:  Notable features include a remarkable series of 21 locks on the Grand Union Canal, a shopping village (Hatton Country World) and a former psychiatric hospital (Central Hospital, Hatton) that has been turned into a large housing estate while still preserving the original Victorian buildings.
i don't know