Distance from Kielder campsite: 51miles / 1 hr 26 minutes by car
Duration of visit: Give it a day
Lat and Long: 55.415585, -1.715474
A grade one listed castle, inhabited and full of character. This has been featured in the first two Harry Potter films.
Not a cheap day out, but well worth it! Take a full day, ensure you leave the site with plenty of time to travel and visit.