The tour du millénaire is a vantage point built in 2001 in Gedinne, Belgium just meters away from the French border.
The tower consists of two tripods fitted together with three different viewing platforms. The total height of the tower is 60 m. The legs of the tripods are the stems of Douglas-fir trees found in the surrounding forest, held together by a steel construction.
It tops the plateau of the Croix-Scaille, a forest of around 90 square kilometres that was used by the Resistance during World War II. The plateau is at 503 m the highest point in the Ardennes and the fourth highest summit in Belgium.
Wikipedia https://en.wikipedia.org/wiki/Tour_du_Millénaire
Address (Unnamed Road), 5575, Belgium
Coordinates 49°57'2.989" N 4°50'42.319" E