These are some of the castles we visited during our trip to Scotland. Each castle has its own unique personality. Some are occupied, some are museums, and some are simply remnants of what use to be. Over the years, there were well over two thousand castles in Scotland. More than 1200 castles and other medieval buildings can be found in Scotland today. Eilean Donan is the most popular castle and is one of our favorites from what we've seen.