The Gillerberg Observation Tower is a German steel lattice observation tower that was built in 1892. The Gillerberg Observation Tower is one of the oldest lattice towers in Germany and was renovated i

The Poppenberg is a tree-covered hill east of Ilfeld in the Harz mountains of Germany, at an elevation of 601 metres. Since 1897, there has been a 33-metre-high steel lattice observation tower on the