Thorn Castle (1967) is a Family, Action & Adventure series that follows a story about two urban boys, who spend a summer at the romantic Kis-Balaton side with an old field keeper, and gradually change their point of view about their civilized life, and fall in love with the nature. Thorn Castle is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 6.4 out of 10 from 7 votes. Fans of family series may also want to explore similar titles below.