Tower Bridge to close for repairs until end of December | London | The Guardian
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Hydraulic Lifting System of the Mechanism of the Tower Bridge Editorial Image - Image of attraction, landmark: 189631270
London Tower Bridge - Information, Pictures & Tips
Pedestrians wait to cross Tower Bridge, London, after it was raised to test that the lifting mechanism was working correctly. The bridge was stuck open for more than an hour on Saturday
Tower Bridge - Wikipedia
Original lifting mechanism, Tower Bridge" by Paul V. A. Johnson at PicturesofEngland.com
Automating a Lego Tower Bridge Model | by Tom Goldsmith | Medium