Craft one correct answer to the question given in input. To make it more interesting, try to use non-stereotypical language if possible. Make sure your correct answer is reasonably long, consistent with the context, and requires common sense (instead of explicit extraction from the context.) In your answer, use as few words as possible from the given context. Use a response that is uncommon/non-stereotypical, so that it is less predictable. To be less repetitive, please vary your language for each question.

Context: They have literally TONS of castles all over the place . I had to have seen at least 10 just driving around . Coupled with the fact that tourism is very very small in Wales they do n't have visitor centers and charge you to see them . You just drive up and walk in .
Question: Why do they have so much of what they have ?
The castles must 've all been built in the past .