Image: Diliff (CC BY 2.5) via Wikimedia Commons
Windsor Castle
Berkshire
One of the world's most famous castles, Windsor has been a royal residence for almost 1,000 years. Founded by William the Conqueror after the Norman invasion, it remains one of the King's official homes today.
Visitors can explore the medieval walls, St George's Chapel and the magnificent State Apartments, making it one of England's essential historic attractions.
Best for: Royal history, St George's Chapel and the State Apartments.