Why are the castles in dover important?

The castles in Dover, particularly Dover Castle, are significant due to their strategic location and historical importance. Overlooking the English Channel, they have served as a crucial defensive stronghold for centuries, protecting England from invasions. The castles also played a vital role during various conflicts, including the Napoleonic Wars and World War II, and are a symbol of England's military history. Today, they are a major tourist attraction, showcasing medieval architecture and heritage.