Found on the Kent coastline, these artillery castles were originally built by King Henry VIII. Walmer has been converted into the Lord Warden's stately-home and Deal is now a museum with a permanent exhibition.
Being Britain's closest point to Europe, the city has been built to defend against invasions. The fortress dates back to the 11th century and there are WW2 war tunnels with a tour providing a vicarious experience.
During the festive winter period, the Scottish capital is great to visit to wander through the Christmas Market. The drive to the famous Loch Ness can be long but has great landscape views and sites on the way.