If you ever get the chance to go to Dover visit the Dover Castle it is absolutely amazing. The last time I went there I think me and my wife spent around 4-5 hours there, exploring every little bit of it. The castle itself is amazing but the secret war time tunnels are astonishing as well. If I ever built a castle it would be a lot similar to that, although it won’t be on a decaying cliff but on a steadier mountain. The white cliffs as well are so beautiful, not to mention the town itself. Dover is not a bad spot, if you got 4-5 days free go and visit Dover. Let me see if I can find some pictures I took last time we were there.
There is no lack of views to take pictures of, even a rubbish photographer like me felt like being a pro just because I couldnt get tired of seeing what I was seeing.
I would say definitely go and explore and take a better camera than I did with you. But to be honest take the picture when you must enjoy yourself first. It would seem like I spend more time outside than inside the castle but to be honest I was having so much fun exploring the inside that I wasnt wasting time taking much pictures.