Drachenfels Castle is a historic ruin located on the Drachenfels mountain in Germany. It was built in the 12th century and served as a fortress to protect the region. The castle offers stunning views of the Rhein River and the surrounding landscape, making it a popular destination for tourists and hikers. The castle is part of the Siebengebirge mountain range and is accessible via a scenic walking trail or a cogwheel railway. Today, visitors can explore the ruins and enjoy the natural beauty of the area, as well as learn about its rich history through informational displays.