Kasteel Restaurant atAuld Holland Inn Empty former Kasteel Restaurant, quaint, old, great space surrounding shrubs, trees, parking. Dutch-German style architecture. Next to and owned by the Auld Holland Inn. 33575 St. Rt. 20 Oak Harbor, Washington 98277 Website No Records FoundSorry, no records were found. Please adjust your search criteria and try again. Google Map Not LoadedSorry, unable to load Google Maps API.