To see a castle in your dream signifies reward, honor, recognition, and praise for your achievements. You are destined to a position of power, wealth, and prestige. Alternatively, the dream indicates your desire to escape from life’s daily problems.
To dream that you live in a castle represents your extreme need for security and protection to the point where you may be isolating yourself from others. Perhaps the dream parallels a waking situation where it has put you on the defensive.
To see a castle door in your dream indicates that you have missed a huge and/or profitable opportunity, especially if you are standing outside the castle door. If you are standing inside the castle door, then it means that you have let your success and ego distance you from others.