Spend the day wandering through the beautiful gardens with more than 9,000 plans from various climates and habitats. Don't miss the rose garden, aquatic plants, and the greenhouses, featuring exotic plants from all around the world.
Drive to Vogelsberg, a majestic mountain range with panoramic views, dense forests, and winding roads. Stop at Hoherodskopf, the highest peak with a stunning lookout tower, climbing park, and a summer toboggan run.
Take a day trip to Lahn River, where you can hike, bike, swim, and canoe in a gorgeous natural setting. Visit the castle in Runkel or the medieval old town in Limburg an der Lahn. Explore the caves in Kubacher Kristallhöhle, where sparkling crystals adorn the walls.
Drive to Kellerwald-Edersee National Park, the only primeval beech forest in Germany and a UNESCO World Heritage site. Hike in the scenic woods, bike along the lake, or enjoy a boat ride to the dam. Spot the rare wildlife and stop at NationalparkZentrum, where you can learn about the park's history and conservation efforts.
Visit Herbornseelbachsee, a tranquil lake surrounded by green valleys and hills. Swim, fish, rent a paddleboat or a SUP, or simply relax on the beach. Hike to the nearby castle ruins of Greifenstein or explore the charming town of Herborn with its half-timbered houses and historic market square.
To save time, consider combining the Botanical Garden with the Mathematikum, a museum of interactive math exhibits, or the Liebig Museum, dedicated to the famous chemist. Also, note that some places might have limited opening hours or require reservation, so plan accordingly. If you have an extra day, visit Wetzlar, a picturesque town with a Gothic cathedral, half-timbered houses, and a spacecraft exhibition at the Viseum museum.