Explore the stunning scenery of the scottish borders on this full day tour of kelso alnwick castle and berwick head to the pretty border town of kelso and soak up the atmosphere in the large market square visit the ruins of kelso abbey then cross the border and travel on to alnwick castle the setting for hogwarts academy in the harry potter movie series continue onward along the northumberland coast to the walled town of berwick upon tweed all entrance fees at your own expense