I don't have the numbers for the castle, but approximately 3 miles west of the Vermilion river you will see some big, blue/grey apartment/condo buildings. Approx 1/3 mile west of these buildings is a huge white house. That house is the castle.
These two structures can not be mistaken for anything else, you really can't miss them.
What's your email address ? I can send you a map that has GPS coordinates on it showing the castle off Vermilion. The file was too large to upload here. If anyone else would like a copy let me know.