Big Ben: London's Iconic Clock Tower

Big Ben is the nickname for the Great Bell of the striking clock at the north end of the Palace of Westminster in London, though the name is frequently used to refer to both the clock and the clock tower itself. The tower was officially renamed the Elizabeth Tower in 2012 to celebrate the Diamond Jubilee of Queen Elizabeth II. Standing 96 meters tall, it is one of the most prominent symbols of the United Kingdom.

Introduction

The clock mechanism was designed by Edmund Beckett Denison and the tower by architect Augustus Pugin in the Gothic Revival style. Since the bell first rang on 31 May 1859, its distinctive bong has become synonymous with Britain itself, broadcast by the BBC since 1924 as a time signal heard around the world.

Architecture & Design

• Architect: Augustus Pugin (tower); Edmund Beckett Denison (clock)
• Height: 96 meters (Elizabeth Tower)
• Clock Faces: 4 faces, each 7 meters in diameter
• Bell Weight: 13.7 tonnes

The Elizabeth Tower is constructed in the Gothic Revival style, featuring ornate limestone cladding over a brick and stone structure with a cast-iron roof. The four clock faces are each 7 meters in diameter, with the minute hands measuring 4.3 meters long and made of hollow copper sheet to reduce weight. The hour hands are 2.7 meters long and cast in gun metal.

The clock mechanism, one of the most accurate public clocks ever made, occupies a room in the tower and is regulated by a simple but ingenious system: old pennies are placed on or removed from the pendulum to adjust its swing. Adding a single pre-decimal penny changes the clock's speed by 0.4 seconds per day, allowing remarkable precision in an era before electronic timekeeping.

History & Construction

• Construction: 1845–1859
• First Chime: 31 May 1859
• Original Bell: Cracked during testing; replaced 1858
• Renovation: 2017–2022 (£80 million)

The decision to build a new clock tower came after the old Palace of Westminster was destroyed by fire in 1834. Charles Barry won the competition to design the new palace and enlisted Augustus Pugin for the tower. The original 16-tonne bell, cast in 1856 by John Warner & Sons, cracked during testing and had to be broken up and recast by the Whitechapel Bell Foundry in 1858 at a reduced weight of 13.7 tonnes.

The current bell developed a crack of its own in 1859, just months after entering service. Rather than recasting it again, the bell was rotated so the hammer struck a different spot, and a lighter hammer was installed. The crack gives Big Ben its distinctive tone. From 2017 to 2022, the tower underwent an £80 million restoration, during which the bell was silenced except for special occasions — the longest period of silence since World War II.

Cultural Significance

• BBC Broadcasts: Since 1924
• New Year's Eve: Chimes broadcast live worldwide
• UNESCO Status: Part of Palace of Westminster World Heritage Site

Big Ben's chimes have been broadcast by the BBC since 1924, making it one of the most recognized sounds in the world. The bongs are used as a time signal and have marked countless historic moments, from the announcement of victory in World War II to New Year's Eve celebrations watched by millions globally.

The tower and its bell have become shorthand for London and Britain in popular culture, appearing in countless films, television programs, and advertisements. The phrase "Big Ben" is so widely known that it has become one of the first English words many foreign visitors learn, and the image of the tower alongside the Thames is one of the most photographed scenes in Europe.

Visitor Experience

• Tour Access: UK residents only (by application through MP)
• Steps: 334 spiral steps to the belfry
• Viewing: Best viewed from Westminster Bridge or Parliament Square

Access to the Elizabeth Tower is restricted to UK residents, who must apply through their Member of Parliament for a guided tour. The tour involves climbing all 334 steps of the spiral staircase (there is no elevator), passing the Victorian clock mechanism, and reaching the belfry where Big Ben and its four quarter bells hang.

For most visitors, the best experience of Big Ben is from the outside. Westminster Bridge offers classic views of the tower reflected in the Thames, while Parliament Square provides a close-up perspective. At night, the clock faces are illuminated, creating one of London's most photographed scenes. The chimes can be heard from several kilometers away on a quiet day.

Key Facts

• Big Ben properly refers to the 13.7-tonne Great Bell, not the tower
• The Elizabeth Tower stands 96 meters tall with 334 steps
• The clock has four 7-meter-diameter faces and is accurate to within a few seconds
• Pennies placed on the pendulum are used to regulate the clock's accuracy
• The bell's distinctive tone comes from a crack that developed in 1859

Fun Facts

• The light above the clock face is lit when Parliament is in session after dark
• Big Ben has only stopped a handful of times in over 160 years, including during the 2017-2022 renovation
• The clock faces were once cleaned by abseilers who rappelled down from the belfry
• During World War II the chimes were broadcast but the clock faces were blacked out to prevent navigation by German bombers

Final Thoughts

Big Ben is far more than a clock — it is the heartbeat of London and the audible symbol of British parliamentary democracy. For over 160 years its chimes have marked the passage of time through war, peace, celebration, and mourning, making it one of the most emotionally resonant landmarks in the world.