If you’ve seen one castle…. They do tend to run into one another, as in, they tend to look similar. There are ruins. Or, there are antiques. The clans of Scotland built castles/mansions. In time, many were donated to the National Trust. It was about lack of funds to maintain the sights. Others are still owned and maintained by the original clan. A Campbell married a Cadbury and the resulting fortune has been beneficial to maintain the amount of gold in the castle. There are a lot of castles. Don’t get me wrong. We don’t have many in the USA.