A coastal town in England's County of Kent, Dover acts as a major port for ferries to travel over to Calais. The town was originally built to repel invasions from across the Channel, with the medieval castle overlooking the town. Dover is most famous for its beautiful white cliffs, which are the title of a song by Vera Lynn. Lynn's uplifting lyrics, with reference to the white cliffs, warmed the hearts of the British people as they faced the onslaught of the upcoming German bombings during World War II. Dover is also a popular town for those who enjoy hiking, and has a great variety of museums, small independent shops and great places to eat.