Windsor Castle United Kingdom is one of the most iconic landmarks in the world and is a must-visit for any traveler. It is the oldest and largest inhabited castle in the world and has been inhabited by the British Royal Family for over 900 years. It is the home to the Queen of England and is the setting for many royal events such as the annual Trooping of the Colour and the Changing of the Guard. Visitors can explore the castle’s stunning grounds, admire the architecture, and take in the rich history of the royal family.