"There'll Be Bluebirds Over the White Cliffs of Dover"
This was one of our favorite castles in England. As such we visited it...a lot. After several visits us kids would start to whine a little when our parents announced we were taking guests to Dover Castle. We went so many times it became a joke in our family, and to this day just mention the word "Dover" in my parent's home and you will hear a mixture of laughs, groans, and outbursts of the song "White Cliffs of Dover".