Schloss Heidelberg, nestled in the lush hills overlooking the Neckar River, is a stunning emblem of Renaissance architecture and history in Germany. Visitors can explore its majestic ruins, which offer a fascinating insight into the past, while strolling through the beautifully landscaped gardens that provide panoramic views of the charming city below. The castle's rich history is brought to life through guided tours, where one can marvel at the intricate details of the Friedrich Building and the world-famous Heidelberg Tun, an enormous wine barrel. The German Pharmacy Museum, located within the castle grounds, offers an intriguing journey through the history of medicine.