Big Ben's chimes were silenced in 2017 to allow for a refurbishment of the 96m (315ft) Elizabeth Tower. Costs ballooned to £80m and the project took a year longer than expected. After five years, the 13.7-tonne bell finally chimed again and was officially unveiled in January.
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Although the clock will only be out of action for two years, the bells have to be silenced for the entire renovation period to protect the workers' hearing. The Big Ben bell weighs 13.76 tonnes and chimes at 118 decibels. At that volume, people would suffer hearing damage after just 14 seconds of exposure.
The 96-meter (315-foot) tower is a symbol of London and the United Kingdom, and its distinctive chimes are known to people all over the world. After being closed for two years for renovations, Big Ben tours are finally reopening in July 2023.
The hiatus was prompted by upcoming renovations on Elizabeth Tower, which houses both Big Ben and the Great Clock that adorns the façade of the structure. According to a statement from the UK Parliament, Big Ben was paused to “ensure the safety of those working in the Tower.”
Visitors will be able to book a maximum of eight tickets per person, depending on availability. The Big Ben tour is not suitable for everyone. Visitors must be aged 11 and over and be comfortable climbing 334 steps and experiencing high noise levels from the clock mechanism and bells - earplugs will be provided.
Maintenance work was performed on the clock in 2007. On August 21, 2017, Big Ben stopped chiming, as the tower was undergoing a four-year restoration project during which the bell was scheduled to ring only for special events, notably New Year's Eve and Remembrance Sunday.
At close proximity, the sound of Big Ben measures 118 decibels, which is loud enough to cause physical pain. To make the bell chime, the copper and tin bell is struck by a hammer weighing 200kg. The bell, weighing 13.7 tonnes itself, makes the musical note “E” when struck.
At close proximity, the sound of Big Ben measures 118 decibels, which is loud enough to cause physical pain. To make the bell chime, the copper and tin bell is struck by a hammer weighing 200kg.
All UK-based and international visitors aged 11 and over are welcome on a Big Ben tour. We do our best to help everyone participate in the tour, however it should be noted that the tour is not suitable for all visitors.
The UK parliament said restoration of the tower is in its final stages and could be finished in October with the return of Big Ben's infamous sounds around the same time period. Tours of Elizabeth Tower are expected to reopen to visitors in spring 2023.