Tower Bridge as its northern landfall is in Tower Hamlets. The bridge consists of two bridge towers tied together at the upper level by two horizontal walkways, designed to withstand the horizontal tension forces exerted by the suspended sections of the bridge on the landward sides of the towers. The vertical components of the forces in the suspended sections and the vertical reactions of the two walkways are carried by the two robust towers. The bascule pivots and operating machinery are housed in the base of each tower. Before its restoration in the 2010s, the bridge's colour scheme dated from 1977, when
London Bridge Is Falling Down then adapted to fit the most famous bridge in England. One of the earliest references to the rhyme in English is in the comedy "The London Chaunticleres", printed in 1657, but probably written about 1636, in which the dairy woman Curds states that she had "danced the building of London-Bridge" at the Whitsun Ales in her youth, although no words or actions are mentioned. Widespread familiarity with the rhyme is suggested by its use by Henry Carey in his satire "Namby Pamby" (1725), as: <poem>"Namby Pamby" is no Clown, London Bridge is broken down: Now he courts the gay Ladee