Wendefurth Dam

Built in 1957. 44m high and dams the Bode and Rapbode.

The curved gravity dam, which dams up the Bode using its own weight, is around 230 m long and 3 m wide at its crown and around 30 m wide at the base. It is 33.8 m high above the valley floor and 43.5 m high above the foundation base. The top of the wall is at 355.8 m above sea level. The volume of the structure contains around 115,000 m³ of concrete. The wall consists of 16 segments, which are sealed on the water side by copper sheets embedded in the concrete. The joints are also sealed with tar and hemp. To relieve flooding, the wall is equipped with a free crown overflow that is 55.2 m long. Two bottom outlets are installed at the base, whose ring piston valves with a diameter of 4.2 m can release up to 75 m³ of water per second.
Source: Wikipedia

From the dam you have a great all-round view of both the reservoir and the adjacent machinery.