Before you complete your journey today, do not overlook the German Apothecary Museum tucked away in the basement of the Ottheinrich Wing. Here, you will find over 20,000 items covering two millennia of medical history, including complete pharmacy interiors from the Baroque and Biedermeier periods. You can even see rare apothecary jars and a historic laboratory in the round Apothecary Tower. Afterward, I invite you to take a slow walk through the remnants of the Hortus Palatinus, once hailed as the 'eighth wonder of the world' for its elaborate terraces and water features. Even in their simplified form, the gardens offer the best vantage points to look down over the Neckar River and the Old Bridge. As you look out over the city, consider the layers of history beneath your feet, from medieval fortress to Renaissance palace, and finally to the beautiful, protected ruin you see today. There is always more to discover in the corners of these ancient walls.