1) Hill of the Harz 
[Harz] The Poppenberg is a tree-covered mountain east of Ilfeld in the Harz mountains of Germany, with a height of 601 metres. Since 1897, there has been a 33 metre high steel lattice observation tower on the summit. The tower was built by the Nordhausen branch of the Harz Club and was named after Otto, Prince of Stolberg-Wernigerode. In go...