DOVER CASTLE

A symbol of the small town of Dover, it's one of Britain's most impressive castles. Along with the legendary White Cliffs, it's a must-see in the area. Erected on the cliffs by the Saxons, the building was altered under William the Conqueror, before Henry II rebuilt the fortifications in the ^12th century, giving it its present form. Its keep, enormous surrounding walls and underground passageways make it an extraordinary colossus, whose interest extends far beyond its medieval heritage. There's also a small military museum, reconstructed interiors and the top of the central tower, with its impressive panoramic views of Kent and France. But the highlight of the visit doesn't necessarily come from the Middle Ages, but rather from the Second World War. Ideally placed for the Battle of Britain, Dover Castle played a leading role in the conflicts and even served as headquarters, notably during Operation Dynamo, which saw the evacuation of troops from Dunkirk in 1940. Don't miss the opportunity to explore the military tunnels, with guided tours scheduled throughout the day. You can also explore the hospital in the same way. The rest of the site also features the First World War command post and, above all, the two doyens of the castle: the Saxon chapel Church of St Mary in Castro and the Roman Lighthouse, which dates back to the invasion of the country in 43 AD.