Before the days of pumps, how do you get water to go uphill? You build a lock. But how do you get it to go up 237 feet? You build 29 locks.
This is a section of 16 locks at Caen hill on the Kennet and Avon canal. Built by John Rennie in the early 1820's, it fell into disuse in the 1940's. It has since been refurbished, and is in daily use.
In case you were wondering, it takes 6 hours to navigate this lock ladder-take a good book with you!