Welcome to the majestic ruins of Heidelberg Castle, a structure that has dominated the skyline above the Neckar River for over 800 years. As you stand here on the northern slope of the Koenigstuhl hill, roughly 80 meters above the Old Town, you are looking at what many call the most famous ruin in the world. This red sandstone fortress is not just one building, but a complex of palaces and fortifications that served as the primary residence for the Prince Electors of the Palatinate, the powerful rulers who helped choose the Holy Roman Emperor. Today, the castle attracts over one million visitors a year, drawn by its unique silhouette and the stories etched into its weathered stone. Take a moment to breathe in the history as we prepare to explore how this seat of power transformed from a regal residence into a symbol of European Romanticism.