Eltz Castle (Burg Eltz) in Germany is famously featured as the primary setting for the 1979 cult classic film The Ninth Configuration (also known as Twitch of the Death Nerve), directed by William Peter Blatty. In the movie, the castle serves as a fictional military asylum for high-ranking soldiers who have suffered mental breakdowns. The castle's stunning, multi-spired medieval architecture provides a hauntingly beautiful and atmospheric backdrop that perfectly matches the film's surreal and philosophical tone. Beyond this specific film, the castle has made "cameo" appearances in various documentaries and served as a visual inspiration for countless fairytale settings in media. In 2026, it remains one of the most photographed castles in the world, largely due to its "frozen-in-time" appearance, having remained in the same family for over 850 years and never being destroyed in war, making it a high-value destination for both film buffs and history enthusiasts.