Nellenburg is a historic castle located in the region of Baden-Württemberg, Germany. It dates back to the 12th century and is situated on a hill, offering scenic views of the surrounding landscape. The castle has undergone various renovations over the years, reflecting different architectural styles. Today, Nellenburg is a popular tourist destination, attracting visitors interested in history and architecture. The site often hosts events and guided tours, allowing guests to explore its rich heritage and learn about the medieval period in Germany.