The only national park in the centrally located state of Hesse, Kellerwald-Edersee encompasses the low-lying Kellerwald Mountains and the snake-like twists of Lake Eversee. Encircled with hiking trails that creep between these verdant, beech-blanketed hill, this park is one of the largest stretches of undisturbed wilderness in the country.
Those who thrive on adrenaline will find little of satisfaction here, although the park from the thrillingly open cockpit of a paramotor trike tops the short list of wild adventures. Otherwise, the highest mountain, the Wustegarten (only 675 meters/2215 feet tall), has a few hiking and mountain biking trails if you're so inclined. Then again true hikers may attempt the week-long Kellerwaldsteig or the 27 km (17 mile) circuit of Lake Edersee if you'd truly like to immerse yourself in this little known (internationally, at least) expanse of the natural world smack dab in the middle of Germany.
Being that this is quite off of the beaten path, you'll find it to be a bit more trouble catching public transportation to the park. If you can't rent a car, then there are public buses from the local townships of Bad Wildungen, Frankenberg and Korbach. Don't let this deter you; it's hard to find this much open wilderness anywhere else in Germany.
Note:You may also rent a bike from the park office (NationalparkZentrum) and make a day of circling the wild borders of the lake.