Kellerwald-Edersee National Park - 4 Things to Know Before Visiting

Hochheideturm is a 59-metre-high (194 ft) observation tower located in Ettelsberg. The northwest side of the building is the tallest artificial climbing wall of Europe with a height of 41 meters.

This UNESCO World Heritage Site is a landscape park in Kassel city. The park area is 2.4 square kilometers, and it is the largest European hill slope park and second-largest worldwide. Construction of the park started in 1689 and took about 150 years. The park is open to the public and it stretches up to the Karlsberg mountain with the Hercules monument on the summit at 526.2 meters (1,726 ft).

The Marburger Schloss is a castle in Marburg, built as a fort in the 11th century, and became the Landgraviate of Hesse's first residence. The building is used as a museum since 1981, and as an event venue. It sits on top of a hill.

It is a science museum located in Gießen offering a wide variety of hands-on mathematical exhibits. Albrecht Beutelspacher, a German mathematician founded it. The museum opened its doors to visitors on Nov 19, 2002. The purpose of the Mathematikum is to let people of any age, gender, and any qualification learn mathematics by personal experience.

Ruins of Hanstein Castle Ruins of Hanstein Castle The castle ruin Hanstein is one of the most famous and interesting castle complexes in central Germany. In its present extent it was constructed in 1308 following a building period of 200 years. From the accessible north tower you can enjoy a beautiful view over the surroundings, and on a clear day you can see for instance the Brocken mountain in the Harz mountains. On offer are events, concerts, fairytales, exhibitions of cribs and Hanstein fest

Monte Kali is a salt heap, composed of 96% of sodium chloride , located in Heringen , in the Land of Hesse in Germany. It is the largest and highest slag heap resulting from the exploitation of potash. Its dimensions reach 250 meters in height, 1,100 meters in length, and 700 meters in width for an area of ​​55 hectares, representing an estimated mass of 150 million tonnes, to which are added daily 20,000 tonnes of operational waste.