Windsor Castle is located in the English city of Windsor and is the largest continuously inhabited castle in the world. Windsor Castle's origins date back to the times of William the Conqueror. The castle, along with the entire Windsor estate, is owned by the British Crown and administered by the Royal Household. It is part of the Royal Collection while the Windsor estate is part of the Crown Estate. Along with Buckingham Palace and Holyrood Palace in Edinburgh, it is one of the British monarch's main official residences. The castle is located in the town of Windsor in the county of Berkshire in England. Below the castle flows the River Thames on its way east to the capital, London. Windsor Castle is also known as "English Versailles". Windsor Castle is the Queen's official weekend reside