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Windsor Castle at sunset as viewed from the Long Walk in Windsor, England

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Windsor Castle

Windsor Castle is a huge old castle in England. Kings and queens have lived there for almost 1,000 years. It has a big round tower on a hill.

Windsor Castle stands above the River Thames, west of London. William the Conqueror built the first castle here in the 1070s, and kings and queens have lived in it ever since. It is still a working royal home, and visitors can tour its grand rooms and chapel.

Founded by William the Conqueror about 1070 to guard the western approaches to London, Windsor Castle has been rebuilt by monarch after monarch: in stone under Henry II, as a palace under Edward III, Charles II and George IV, and again after the fire of 1992. It remains a working royal residence.

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Photo: Diliff, CC BY 2.5, via Wikimedia Commons

Discover Windsor Castle

Windsor Castle is in England, next to a river called the Thames.

It has thick stone walls, towers and a great round tower on a hill. Kings and queens have lived here for a very, very long time. The King still uses it today.

Windsor Castle stands on a ridge above the River Thames in the town of Windsor, west of London. The castle and its courtyards cover 13 acres of ground.

It was first a fortress and later became a royal palace. Kings and queens have lived in it and changed it for almost 1,000 years. The Royal Collection Trust calls it the oldest and largest occupied castle in the world. The King uses it for receptions and to welcome visitors from other countries, and many parts are open to the public.

Britannica places the castle on a ridge at the northeastern edge of the district of Windsor and Maidenhead, Berkshire, occupying 13 acres (5 ha) above the south bank of the Thames. It consists of two courts, or wards, separated by the Round Tower: the lower ward to the west and the upper ward to the east.

The Royal Household describes it as a royal home and fortress for over 900 years and a working palace today, used for investitures, audiences, receptions and state visits; the Royal Collection Trust calls it the oldest and largest occupied castle in the world. Its community includes the Constable and Governor, the Dean and Canons of the College of St George, the Military Knights of Windsor and a permanent military guard.

Where
Windsor, Berkshire, England, above the River Thames
Founded
about 1070, by William the Conqueror
Area
13 acres (5 hectares)
Today
A working royal palace, open to visitors
Windsor Castle at sunset as viewed from the Long Walk in Windsor, England
Photo: Diliff, CC BY 2.5, via Wikimedia Commons

Nearly 1,000 years of kings and queens

About 1,000 years ago, a king named William built a castle here.

Later kings made it bigger and built it in stone. Some kings made it beautiful inside. Queen Elizabeth II lived here a lot, too.

William the Conqueror chose this spot in the 1070s. It was high above the River Thames, a day's march from the Tower of London, so a castle here could guard the way into London from the west. In the 1170s, Henry II rebuilt it in stone instead of wood.

Later kings turned the fortress into a palace. Charles II added grand rooms in the 1670s. In the 1820s, George IV gave the castle much of the look it has today, with turrets, towers and battlements. Queen Victoria opened the grand rooms to visitors in 1845, and during World War II the young Princesses Elizabeth and Margaret lived here.

Britannica notes a royal residence at Windsor in Saxon times (c. 9th century); William I developed the present site about 1070 with a mound and stockade. The Royal Household says he chose the site above the Thames on the edge of a Saxon hunting ground, a day's march from the Tower of London, to guard the western approaches to the capital; today's outer walls follow the original lines. Henry II rebuilt the Round Tower, outer walls and royal apartments in stone in the 1170s, and Edward III, born at Windsor, extended the castle in the 1360s, creating St George's Hall for his Order of the Garter.

During the Civil War Parliamentarians captured the castle in 1642, and from 1643 it served as a prison; Charles I was held there in 1648 before his trial and execution and was buried in St George's Chapel. Charles II created new State Apartments in the 1670s; George IV and his architect Jeffry Wyatville refashioned the buildings in the Gothic style in the 1820s. Queen Victoria first opened the State Apartments to the public in 1845.

Through the years

From wooden fort to stone palace

First, the castle was made of wood on top of a mound of earth.

Later, builders made it from strong stone. Then artists and carvers made the rooms inside beautiful.

The first castle was a mound of earth with a wooden fence, called a stockade, around it. Henry II replaced the wood with stone, building the great Round Tower on top of the mound.

Centuries later, Charles II hired the architect Hugh May, the painter Antonio Verrio and the wood-carver Grinling Gibbons to make splendid new rooms, and he laid out a straight avenue 5 kilometers long called the Long Walk. In the 1820s, George IV's architect Jeffry Wyatville added battlements, turrets and towers in the Gothic style.

The sequence is legible in the fabric. William's mound and stockade (about 1070) were replaced by Henry II's stone Round Tower and walls; in the 13th century Henry III completed the south wall and the west end of the lower ward. Edward III converted the upper ward's fortress buildings into royal apartments (Britannica), and St George's Chapel, begun by Edward IV and finished in 1528, is among the finest examples of Perpendicular Gothic.

Charles II's State Apartments of the 1670s combined Hugh May's architecture, Antonio Verrio's murals and ceilings and Grinling Gibbons's carving; the King's Dining Room and the Queen's Presence and Audience Chambers keep many of these features. He also laid out the 5 km Long Walk due south into Windsor Great Park. George IV and Wyatville added crenellations, turrets and towers in the 1820s, moved the private apartments to the south and east sides of the quadrangle and made the north side for formal occasions.

Tower, chapel and great hall

The Round Tower sits on a hill in the middle. A flag flies on top.

The castle has a beautiful church called a chapel. It has a giant hall for big dinners. It even has a famous dolls' house!

The Round Tower stands on a man-made mound in the middle and splits the castle into two courtyards, called wards. Inside it are the Royal Archives, where old royal letters and photographs are kept.

St George's Chapel, finished in 1528, is a church with tall windows in the Gothic style, where many royal weddings and funerals have taken place. St George's Hall is 55.5 meters long, and its table can seat 160 guests for a state banquet. Visitors also love Queen Mary's Dolls' House, a famous tiny house full of miniature things.

The Round Tower, on its artificial mound and visible for miles, divides the lower and upper wards and houses the Royal Archives and the Royal Photograph Collection. The Print Room and Royal Library hold drawings, prints, manuscripts and books of the Royal Collection.

St George's Chapel is a Royal Peculiar, answering directly to the Sovereign rather than to a bishop; it holds daily services open to all and has seen many royal weddings and funerals. Queen Elizabeth II is buried there with Prince Philip, Queen Elizabeth the Queen Mother, King George VI and Princess Margaret. St George's Hall, 55.5 m by 9 m, seats up to 160 for state banquets; George IV's Waterloo Chamber shows portraits commissioned from Thomas Lawrence after 1815. Open to visitors are the precincts, the State Apartments, Queen Mary's Dolls' House, St George's Chapel and the Albert Memorial Chapel.

Round Tower
On an artificial mound; holds the Royal Archives
St George's Hall
55.5 m long, 9 m wide; banquets for up to 160
St George's Chapel
Completed 1528, Perpendicular Gothic
Long Walk
5 km, laid out by Charles II
Windsor Castle at sunset as viewed from the Long Walk in Windsor, England
Photo: Diliff, CC BY 2.5, via Wikimedia Commons

Fire, restoration and life today

In 1992, a big fire burned part of the castle.

Workers spent five years fixing it. They used old skills to make it beautiful again. Now visitors come all year round.

On November 20, 1992, a spotlight touched a curtain in the castle's private chapel and set it on fire. It took 15 hours to put the fire out. More than 100 rooms, about one-fifth of the castle, were damaged or destroyed.

Restoring them took five years and brought back many old crafts. The work finished on November 20, 1997, six months early. Today the castle is open all year, and the Changing of the Guard takes place in its grounds.

The Royal Household calls the fire of November 20, 1992 the dominant event of the castle's 20th-century history. It began in the Private Chapel when a spotlight ignited a curtain; putting it out took 15 hours and one and a half million gallons of water. Nine principal rooms and over 100 others, some 9,000 square meters or about one-fifth of the castle's area, were damaged or destroyed.

The five-year restoration, which the Household describes as the greatest historic building project undertaken in the country in the 20th century, revived many traditional crafts and was completed on November 20, 1997, six months ahead of schedule, at £37 million, £3 million under budget. Seventy percent of the cost came from opening Buckingham Palace's State Rooms to summer visitors. Today the castle is open all year and remains a working palace.

Amazing facts

  • It took 15 hours to put out the big fire in 1992.

    The 1992 fire took 15 hours and one and a half million gallons of water to put out.

    Started by a spotlight against a curtain in the Private Chapel, the 1992 fire needed 15 hours and 1.5 million gallons of water to extinguish.

  • The banquet table in the big hall seats 160 people.

    St George's Hall is 55.5 meters long, and its banquet table can seat up to 160 guests.

    State banquets are held in St George's Hall, 55.5 m long and 9 m wide, at a table seating up to 160.

  • The castle's grand rooms first opened to visitors in 1845.

    Queen Victoria first opened the castle's State Apartments to the public in 1845.

    The State Apartments were first opened to the public in 1845, under Queen Victoria.

  • The repairs after the fire finished six months early.

    The restoration after the fire finished on November 20, 1997, six months ahead of schedule and under budget.

    Completed six months early at £37 million, £3 million below budget, the restoration was 70 percent funded by opening Buckingham Palace's State Rooms.

Words to know

castle
a large, strong building with thick walls, built to protect the people inside
ward
a courtyard inside a castle's walls
stockade
a fence of strong wooden posts built for protection
battlements
the low walls with gaps along the top of a castle
chapel
a small church, often inside a larger building
restoration
careful work to repair something old and make it last

Discovery challenge

  1. Which river flows next to Windsor Castle?

    Which river does Windsor Castle stand above?

    Above which river's south bank does the castle stand?

    • The Nile
    • The Thames
    • The Amazon
    Show the answer

    The Thames

    The Thames! It flows all the way to London.

    The castle stands on a ridge above the River Thames.

    The Thames: the castle occupies 13 acres above its south bank.

  2. Which king built the first castle at Windsor?

    Who chose the site and built the first castle at Windsor?

    Which king developed the present site about 1070 to guard the western approaches to London?

    • William the Conqueror
    • Charles II
    • George IV
    Show the answer

    William the Conqueror

    William the Conqueror, about 1,000 years ago.

    William the Conqueror built a mound and wooden stockade here in the 1070s.

    William I, about 1070; Charles II and George IV remodeled it centuries later.

  3. What happened at the castle in 1992?

    What damaged more than 100 rooms of the castle in 1992?

    What event of November 20, 1992 led to a five-year restoration?

    • A flood
    • A fire
    • An earthquake
    Show the answer

    A fire

    A fire! Workers fixed the rooms afterward.

    A fire started when a spotlight touched a curtain; it damaged or destroyed more than 100 rooms.

    A fire in the Private Chapel damaged about one-fifth of the castle's area; restoration finished in 1997.

  4. What is the big tower in the middle called?

    Which tower splits the castle into two wards?

    Which tower, on an artificial mound, separates the lower and upper wards?

    • The Round Tower
    • The Clock Tower
    • The Leaning Tower
    Show the answer

    The Round Tower

    The Round Tower! It sits on a hill in the middle.

    The Round Tower stands on a man-made mound between the two wards.

    The Round Tower, which today holds the Royal Archives.

Nearby places

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For parents & teachers

What children will learn

  • Locate Windsor on the River Thames and explain why William the Conqueror built a castle there.
  • Describe how the castle changed from a wooden stockade to a stone fortress and then a palace.
  • Name the Round Tower, St George's Chapel and St George's Hall.
  • Discuss how the castle was restored after the 1992 fire.

Recommended ages: 3 to 17 · About 15 minutes

Talk about it

  • Windsor Castle has been changed by almost every king and queen who lived there. If you could add one room, what would it be?
  • Why do you think William the Conqueror chose a high place above a river for his castle?
  • After the 1992 fire, workers used old crafts to repair the rooms. Why might it matter to repair old buildings in the old way?

Try at home or in class

  • Build a motte-and-bailey castle: a mound of sand or soil with a tower on top and a fence of craft sticks around a courtyard.
  • Draw a timeline of the castle with one picture for each king or queen who changed it.

Key vocabulary: castle, ward, stockade, battlements, chapel, restoration

Where these facts come from

  1. Wikidata , Wikimedia Foundation (CC0 1.0)
  2. Royal Residences: Windsor Castle , The Royal Household (royal.uk)
  3. Windsor Castle , Royal Collection Trust
  4. Windsor Castle , Encyclopaedia Britannica
  5. 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: Diliff, CC BY 2.5, via Wikimedia Commons · source · license
  • Photo: Bob Collowan, CC BY-SA 3.0, via Wikimedia Commons · source · license