Windsor Castle is one of the oldest and largest inhabited castles in the world, located in Windsor, Berkshire, England. It was originally built in the 11th century by William the Conqueror and has since been expanded and renovated. The castle serves as an official residence for the British royal family and is a popular tourist attraction, known for its stunning architecture and beautiful gardens. The castle features several notable areas, including the State Apartments, which are richly decorated and used for official functions. Another highlight is St. George's Chapel, a beautiful Gothic structure where many royal ceremonies, including weddings and funerals, take place.