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The London Eye and County Hall seen from the north bank of the River Thames, Lambeth, London, England

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London Eye

The London Eye is a giant wheel beside the River Thames in London. People ride in glass pods that go slowly around. From the top, you can see the whole city!

The London Eye is a huge observation wheel, 135 meters tall, on the South Bank of the River Thames in London. It was built for the year 2000, the new millennium. Its 32 glass capsules carry up to 25 people each, and the wheel turns so slowly that people step on while it moves.

Designed by David Marks and Julia Barfield for a 1993 millennium landmark competition, the 135 m London Eye is a 120 m wheel cantilevered over the Thames from two leaning supports. Meant to stand for five years, it became permanent and was the world's tallest Ferris wheel until 2006.

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Photo: Christian David, CC BY-SA 4.0, via Wikimedia Commons

Discover the London Eye

The London Eye is in London, a big city in the United Kingdom.

It is a giant wheel by the river. Glass pods hang all around it. People ride inside and go up, up, up, then slowly come back down.

The London Eye stands on the South Bank of the River Thames, in the part of London called Lambeth. It is an observation wheel, a giant wheel built for looking at the view, 135 meters tall.

Around its rim are 32 glass capsules, shaped like eggs, and each can carry up to 25 people. The wheel turns so slowly that it usually does not stop: people simply step on and off. From the top, riders can see landmarks like St. Paul's Cathedral, Big Ben and the Houses of Parliament. About 3.5 million people ride it every year.

Britannica describes the London Eye as a revolving observation wheel, or Ferris wheel, on the South Bank of the Thames in the borough of Lambeth, 135 m (443 ft) tall overall. It was the world's tallest Ferris wheel from 1999 until 2006, when the Star of Nanchang in China passed it, and Britannica says it is sometimes credited with sparking a worldwide revival of Ferris wheel building.

The wheel itself is 120 m (394 ft) across. Its 32 ovoid capsules match the number of London's boroughs; each holds up to 25 passengers and stays upright on motorized mounts as the wheel turns. At two revolutions an hour, it need not stop for boarding except for passengers with disabilities. The operator reports about 3.5 million riders a year.

Height
135 m (443 ft)
Wheel diameter
120 m (394 ft)
Capsules
32, up to 25 people each
Riders
about 3.5 million a year
The London Eye and County Hall seen from the north bank of the River Thames, Lambeth, London, England
Photo: Christian David, CC BY-SA 4.0, via Wikimedia Commons

A wheel for the millennium

Two architects had an idea for a giant wheel to celebrate the year 2000.

It was only meant to stay for a few years. But people loved it so much that it stayed for good!

In 1993 a newspaper and an architecture group held a competition for a new London landmark to celebrate the millennium, the year 2000. Two architects, David Marks and Julia Barfield, sent in the idea of a giant wheel. No winner was chosen, but they decided to build it themselves, found the site and got help from British Airways to pay for it.

Building began in 1998. The prime minister, Tony Blair, opened it in a ceremony on December 31, 1999, and the first paying riders went up on March 9, 2000. It was planned to come down after five years, but it was so popular that it stayed.

The idea began as Marks Barfield Architects' 1993 entry to a competition sponsored by The Sunday Times and the Architecture Foundation for a millennium landmark. Britannica notes that no winner was declared, and that Marks and Barfield developed the project themselves, found the site and obtained much of the funding from British Airways. The operator adds that a campaign launched after an Evening Standard journalist discovered the planning application helped rally public support.

Construction began in 1998. Prime Minister Tony Blair ceremonially opened the wheel on December 31, 1999, but the first paying passenger rode on March 9, 2000. Originally scheduled to be dismantled after five years, it stayed because of its popularity. The original owners were British Airways, Marks Barfield and the Tussauds Group; it is now operated for Merlin Entertainments. It celebrated its 25th birthday in 2025.

Through the years

Built lying down, then pulled upright

The builders put the giant wheel together lying flat over the river.

Then they slowly pulled it up until it stood tall. Strong cables hold it in place.

The London Eye was not built standing up. The builders put the wheel together lying flat over the River Thames, then pulled it upright into place.

The wheel's center, called the hub, sits on two big legs that lean out over the river. Both legs are on the same side, so the wheel hangs out over the water. Six long cables hold the whole structure steady. The architects tried around 100 different designs before choosing this one.

Britannica records that the wheel was assembled over the river in a horizontal position and then pulled upright. Its hub rests on two supports anchored to a foundation on the riverbank and leaning out over the river at 65 degrees from the horizontal; with both supports on one side of the hub, the wheel is cantilevered over the Thames. Six backstay cables anchored to a second foundation hold the whole structure in place.

The rim is connected to the hub by 64 cables that work like the spokes of a bicycle wheel, and the drive is transmitted to the rim through rubber tires mounted at the base of the structure. The operator says Marks Barfield developed around 100 variations of the wheel before settling on the final design.

Hub, spokes and 32 capsules

The wheel has thin cables like the spokes of a bike wheel.

The glass pods stay upright as the wheel turns, so nobody tips over. There are 32 pods, one for each part of London called a borough.

Look at the wheel and you will see thin cables running from the rim to the center, like the spokes on a bicycle wheel. There are 64 of them. The capsules are made of glass, sealed and air-conditioned, and motors keep each one level as the wheel goes around.

There are 32 capsules, one for each of London's 32 boroughs, the areas the city is divided into. The wheel turns twice an hour, so a full ride around takes about half an hour. Since 2006, LED lights have made the wheel stand out at night.

The 120 m rim hangs from the hub on 64 tension cables, bicycle-wheel fashion. The 32 capsules, sealed, air-conditioned and oval, correspond to the 32 boroughs that, with the City of London, make up Greater London; each rests on motorized mounts that keep it upright. With two revolutions an hour, one turn takes about 30 minutes.

In 2006 a decorative LED lighting system was installed to make the wheel more prominent after dark. The wheel has had several names: originally the Millennium Wheel, then sponsored names such as the British Airways London Eye and the Coca-Cola London Eye. The operator reports that it has won more than 86 awards for tourism, architecture and engineering.

Spoke cables
64
Supports lean at
65 degrees from the horizontal
Speed
two turns an hour
Opened to riders
March 9, 2000
The London Eye and County Hall seen from the north bank of the River Thames, Lambeth, London, England
Photo: Christian David, CC BY-SA 4.0, via Wikimedia Commons

The London Eye today

Today, millions of people ride the London Eye.

From the top, they can see famous places, like the big clock tower called Big Ben. On New Year's Eve, it is the center of London's big celebration.

The London Eye is one of London's most visited attractions, with about 3.5 million riders a year. From the capsules, people look out over the whole city, to landmarks such as Big Ben and the Houses of Parliament just across the river.

The wheel is also the centerpiece of London's New Year celebrations. In 2025 it celebrated its 25th birthday.

The operator reports about 3.5 million riders a year and calls the wheel a symbol of modern Britain and the centerpiece of the city's New Year celebrations; it marked its 25th birthday in 2025. Views from the capsules take in St. Paul's Cathedral, Big Ben and the Houses of Parliament.

Britannica counts it among London's most popular paid attractions. A structure designed to be temporary has become a permanent part of the skyline beside County Hall on the South Bank. Ownership has changed over the years: British Airways, Marks Barfield and the Tussauds Group were the first owners, Tussauds became sole owner in 2006, and the next year Tussauds was sold to the Blackstone Group, which folded the London Eye into its Merlin Entertainments Group.

The Elizabeth Tower and the northern end of the Palace of Westminster, seen from Parliament Square near the Carriage Gates
Photo: Christian David, CC BY-SA 4.0, via Wikimedia Commons

Amazing facts

  • The London Eye was only meant to stay for five years.

    The wheel was supposed to be taken down after five years, but it was so popular that it stayed.

    Originally scheduled to be dismantled after five years, the wheel was kept because of its continued popularity.

  • There is one pod for each part of London.

    The 32 capsules stand for London's 32 boroughs.

    The 32 capsules correspond to the 32 boroughs that, with the City of London, make up Greater London.

  • The wheel was built lying down!

    The wheel was put together lying flat over the River Thames, then pulled upright.

    The wheel was assembled horizontally over the river before being pulled upright.

  • The wheel does not stop to let people on.

    The wheel turns so slowly, twice an hour, that riders step on and off while it moves.

    At two revolutions an hour, the wheel need not stop for boarding, except for passengers with disabilities.

Words to know

observation wheel
a giant wheel with cabins that carries people up to look at the view
capsule
a closed cabin that people ride in
hub
the center of a wheel
spoke
a rod or cable that joins the center of a wheel to its rim
cantilever
a structure held up at one side only, sticking out over empty space
millennium
a period of 1,000 years; the year 2000 started a new one

Discovery challenge

  1. Which river is the London Eye next to?

    On the bank of which river does the London Eye stand?

    Over which river is the London Eye cantilevered?

    • The Thames
    • The Seine
    • The Danube
    Show the answer

    The Thames

    The River Thames!

    It stands on the South Bank of the Thames in London.

    The Thames: both supports stand on one side of the hub, so the wheel overhangs the river.

  2. How many glass pods does the London Eye have?

    How many capsules carry riders on the London Eye?

    How many capsules does the wheel carry, one per London borough?

    • 8
    • 32
    • 100
    Show the answer

    32

    32 pods!

    32 capsules, each carrying up to 25 people.

    32, matching the 32 boroughs that, with the City, form Greater London.

  3. How was the wheel built?

    How did the builders put the London Eye together?

    How was the wheel erected?

    • Lying flat, then pulled upright
    • Dropped in by a helicopter
    • Floated in on a boat in one piece
    Show the answer

    Lying flat, then pulled upright

    It was built lying flat, then pulled up!

    It was assembled lying flat over the river, then pulled upright.

    Assembled horizontally over the Thames and then pulled upright.

  4. Why was the London Eye built?

    Which celebration was the London Eye designed for?

    For which occasion did Marks and Barfield design the wheel in 1993?

    • The millennium, the year 2000
    • A king's birthday
    • A sports game
    Show the answer

    The millennium, the year 2000

    To celebrate the year 2000!

    It was designed as a landmark for the millennium, the year 2000.

    A 1993 competition for a London landmark to commemorate the millennium.

Nearby places

Experiments to try

Explore next

For parents & teachers

What children will learn

  • Locate the London Eye on the South Bank of the Thames.
  • Describe how the wheel works: hub, spoke cables, rim and capsules that stay level.
  • Explain how the wheel was built flat and pulled upright.
  • Discuss why a temporary structure might become permanent.

Recommended ages: 3 to 17 · About 15 minutes

Talk about it

  • The London Eye was meant to be temporary. Can you think of other things that were meant to be temporary but stayed?
  • Why do you think the capsules need to stay level as the wheel turns?
  • What would you most like to see from the top of a giant wheel in your town?

Try at home or in class

  • Make a wheel from a paper plate with string spokes and paper-cup capsules hung on pins so they stay upright as you turn it.
  • Look at a bicycle wheel with a grown-up and count its spokes; talk about how thin spokes can hold a strong wheel.

Key vocabulary: observation wheel, capsule, hub, spoke, cantilever, millennium

Where these facts come from

  1. Wikidata , Wikimedia Foundation (CC0 1.0)
  2. London Eye , Encyclopaedia Britannica
  3. London Eye history and facts , The London Eye (official site, Merlin Entertainments)
  4. Wikimedia Commons , Wikimedia Foundation (Per file (public domain, CC0, CC BY or CC BY-SA); see each media record)

Checked, not yet human-reviewed. Last updated October 27, 2026. Spotted a mistake? Tell us.

Picture credits
  • Photo: Christian David, CC BY-SA 4.0, via Wikimedia Commons · source · license
  • Photo: Christian David, CC BY-SA 4.0, via Wikimedia Commons · source · license