Castle and manor owners or representatives can create an account, insert interesting information about their assets and make it accessible globally.
If all castle and manors are centralized in one portal, it makes you visible globally in one click.
Fans and end users can look for you by location, ratings or services and pick you up as next destination. If they don't visit you next month, they probably will add you into their list of favorites to visit you in nearest future. Also, they would get inspired by other portal users to monitor their "Visited Castles" lists.
Service providers for castles - renovation companies or gardening companies - can create their service accounts to be close to castle owners and ready with service portfolios. So, castle owners have a single search point for establishing service agreements