![Part of the three-train clock, which drives the hands of Big Ben, in the mechanism room, which will be dismantled and cleaned during the renovation work on the Elizabeth Tower at the Part of the three-train clock, which drives the hands of Big Ben, in the mechanism room, which will be dismantled and cleaned during the renovation work on the Elizabeth Tower at the](https://c8.alamy.com/comp/JY12RP/part-of-the-three-train-clock-which-drives-the-hands-of-big-ben-in-JY12RP.jpg)
Part of the three-train clock, which drives the hands of Big Ben, in the mechanism room, which will be dismantled and cleaned during the renovation work on the Elizabeth Tower at the
![Part of the three-train clock, which drives the hands of Big Ben, is seen in the mechanism room, which will be dismantled and cleaned during the renovation work on the Elizabeth Tower Part of the three-train clock, which drives the hands of Big Ben, is seen in the mechanism room, which will be dismantled and cleaned during the renovation work on the Elizabeth Tower](https://c8.alamy.com/comp/2CJJ77H/part-of-the-three-train-clock-which-drives-the-hands-of-big-ben-is-seen-in-the-mechanism-room-which-will-be-dismantled-and-cleaned-during-the-renovation-work-on-the-elizabeth-tower-at-the-palace-of-westminster-london-britain-august-17-2017-photograph-taken-on-august-17-2017-reutersvictoria-jonespool-for-editorial-use-only-2CJJ77H.jpg)
Part of the three-train clock, which drives the hands of Big Ben, is seen in the mechanism room, which will be dismantled and cleaned during the renovation work on the Elizabeth Tower
![The mechanism to the clock of the Queen Elizabeth tower and bells of Big Ben. London | Clock, Big ben, Graphic card The mechanism to the clock of the Queen Elizabeth tower and bells of Big Ben. London | Clock, Big ben, Graphic card](https://i.pinimg.com/564x/fb/f0/a4/fbf0a41a82792a957f265bcfeebf086b.jpg)