
Big Ben is a British cultural icon and a prominent symbol of parliamentary democracy. The nickname Big Ben is used for the Great Bell of the Great Clock of Westminster and, by extension, the clock tower itself, which stands at the north end of the Palace of Westminster in London, England. The clock faces are illuminated by 28 85-watt energy-efficient bulbs, which replaced the candles that were once used to light the tower when parliament was in session.
| Characteristics | Values |
|---|---|
| Was Big Ben lit by candles? | No |
| Current source of light | 28 85-watt energy-efficient bulbs |
| Reason for lighting Big Ben | To indicate that Parliament is in session |
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What You'll Learn
- Big Ben is not lit by candles, but by energy-efficient bulbs
- The Elizabeth Tower, where Big Ben is located, is 316 feet tall
- Big Ben is the nickname for the Great Bell of the Great Clock of Westminster
- The clock's timekeeping is regulated by a stack of coins on its pendulum
- The clock tower was designed by Augustus Pugin in the neo-Gothic Revival style

Big Ben is not lit by candles, but by energy-efficient bulbs
Big Ben is a British cultural icon and a prominent symbol of parliamentary democracy. The name refers to the Great Bell of the Great Clock of Westminster, and, by extension, the clock tower itself, which stands at the north end of the Palace of Westminster in London. The clock tower was designed by Augustus Pugin in the neo-Gothic Revival architectural style and completed in 1859. Standing tall at 316 feet, it is an iconic feature of London's skyline.
While Big Ben is illuminated at night, it is not lit by candles. Each of the four clock faces is made up of 312 sections of opal glass, which are illuminated by 28 85-watt energy-efficient bulbs. These bulbs have an impressive lifespan of 60,000 hours, or seven years. The clock faces are also backlit by the Ayrton Light, a lantern that shines when parliament is in session.
The illumination of Big Ben has not always been constant. Initially, to save money, the tower was only lit when parliament was in session. During World War II, from 1939 to 1945, the lights were turned off to prevent German bombers from using the tower as a target.
Big Ben's timekeeping is regulated by a unique mechanism: a stack of coins placed on its huge pendulum. Adding or removing a penny changes the clock's speed by 0.4 seconds per day, ensuring the clock keeps precise time within a few seconds per week.
Big Ben's chimes and visual presence make it an integral part of London's New Year celebrations. The clock tower is often lit up with fireworks, light installations, and live music performances to welcome the new year.
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The Elizabeth Tower, where Big Ben is located, is 316 feet tall
Big Ben is the nickname for the Great Bell of the Great Clock of Westminster and, by extension, for the clock tower itself, which stands at the north end of the Palace of Westminster in London, England. The clock tower was designed by Augustus Pugin in the neo-Gothic Revival architectural style. It was originally named the Clock Tower but was renamed the Elizabeth Tower in 2012 to mark the Diamond Jubilee of Queen Elizabeth II. The tower stands tall at 316 feet (96 metres) and has 334 steps from ground level to the belfry and 399 steps to the Ayrton Light at the very top of the tower.
The clock uses its original mechanism and was the largest and most accurate four-faced striking and chiming clock in the world upon its completion. It was designed by Edmund Beckett Denison and George Airy, the Astronomer Royal, and constructed by Edward John Dent and Frederick Dent. The Great Bell was cast by the Whitechapel Bell Foundry and weighs 13.5 long tons (13.7 tonnes; 15.1 short tons). The clock's timekeeping is precisely controlled by a small stack of pre-decimal penny coins placed on a huge pendulum. Adding or removing a penny changes the clock's speed by 0.4 seconds per day, so the tower expertly keeps time within a few seconds every week.
The Elizabeth Tower has been featured in numerous films and is considered London's most iconic film location. It has been featured in nearly 20 Disney films, including "Peter Pan," and is a prominent symbol of Britain and parliamentary democracy. The clock tower has also been used in establishing shots of films set in London.
The tower is illuminated at night, but this wasn't always the case. Previously, it was only lit when parliament was in session, and the lights were turned off between 1939 and 1945 to prevent German bombers from using the tower as a target. Today, the Elizabeth Tower is illuminated by 28 85-watt energy-efficient bulbs that can last 60,000 hours (or seven years).
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Big Ben is the nickname for the Great Bell of the Great Clock of Westminster
The Great Clock of Westminster uses its original mechanism and was the largest and most accurate four-faced striking and chiming clock in the world upon its completion. It was designed by Edmund Beckett Denison and George Airy, the Astronomer Royal, and constructed by Edward John Dent and Frederick Dent. The Great Bell, which weighs 13.5 long tons (13.7 tonnes; 15.1 short tons), was cast by the Whitechapel Bell Foundry. The clock's timekeeping is regulated by a stack of coins placed on its pendulum, ensuring a steady movement of the clock hands at all times.
The origin of the name Big Ben is not known for certain, although there are two main theories. The first is that it was named after Sir Benjamin Hall, the first commissioner of works, a tall man who was known affectionately as "Big Ben". The second theory is that it was named after Benjamin Caunt, a heavyweight boxing champion at the time, who was also known as "Big Ben".
Big Ben is a British cultural icon and a prominent symbol of Britain and parliamentary democracy. It has been featured in numerous films and is often used in establishing shots of London. It is also a focal point of New Year celebrations in the United Kingdom, with its chimes broadcast to welcome the start of the New Year. Big Ben is illuminated at night, along with the four clock faces, each measuring 23 feet across. The clock tower has 334 steps leading up to the belfry, where the Great Bell is located, and 399 steps to the very top of the tower.
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The clock's timekeeping is regulated by a stack of coins on its pendulum
Big Ben is the nickname for the Great Bell of the Great Clock of Westminster, and, by extension, for the clock tower itself. The clock uses its original mechanism and was the largest and most accurate four-faced striking and chiming clock in the world when it was completed in 1859. The tower was designed by Augustus Pugin in the neo-Gothic Revival architectural style. It stands 316 feet (96 m) tall, and there are 334 steps from ground level to the belfry.
The clock's timekeeping is regulated by a small stack of pre-decimal penny coins placed on its huge pendulum. Adding or removing a penny changes the clock's speed by 0.4 seconds per day, keeping the time within a few seconds every week. This is because adding a coin minutely lifts the pendulum's centre of mass, reducing the effective length of the pendulum rod and increasing the speed at which the pendulum swings. The Keeper of the Clock is responsible for keeping time and hand-winding the clock three times a week.
Other coins have been placed on the pendulum as well. For instance, in 2009, three pennies were replaced with a £5 commemorative coin minted to celebrate the upcoming 2012 Summer Olympics.
Big Ben has rarely stopped. Even after a bomb destroyed the Commons Chamber during World War II, the clock tower survived, and Big Ben continued to strike the hours.
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The clock tower was designed by Augustus Pugin in the neo-Gothic Revival style
Big Ben is the nickname for the Great Bell of the Great Clock of Westminster, and, by extension, for the clock tower itself. The clock tower was originally named the Clock Tower but was renamed the Elizabeth Tower in 2012 to mark the Diamond Jubilee of Queen Elizabeth II.
The Clock Tower stands at the north end of the Palace of Westminster in London, England. Construction began on September 28, 1843, and was completed in 1859. The tower is 316 feet (96 m) tall, with a square base measuring 40 feet (12 m) on each side. The climb from the ground level to the belfry consists of 334 steps. The tower is founded on a 50-foot (15.2 m) square raft made of 10 feet (3 m) thick concrete, located 13 feet (4 m) below ground level. The interior volume of the tower is 164,200 cubic feet (4,650 cubic meters), and it is not open to the public, except for UK residents who can arrange tours through their Member of Parliament.
The clock uses its original mechanism and was the largest and most accurate four-faced striking and chiming clock in the world upon its completion. The Great Bell, which is housed within the belfry and weighs 13.5 long tons (13.7 tonnes or 15.1 short tons), rings every hour and is accompanied by four smaller bells that ring every quarter-hour. The clock's timekeeping is regulated by a stack of coins placed on its pendulum, ensuring a steady movement of the clock hands. The clock dials are illuminated at night, and a light above Big Ben is lit to indicate when Parliament is in session.
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Frequently asked questions
No, Big Ben was never lit by candles. The clock faces were originally lit with gas, before electric lighting was installed in 1906.
Big Ben was lit to indicate when Parliament was in session.
Yes, Big Ben is still lit at night. The Ayrton Light, a lantern above the belfry, is lit whenever the House of Commons sits after dark.
The dials are illuminated by a mixture of green and white lights, creating a familiar yellow glow.











































