Wasserturm Hamburg-Winterhude, Water tower in Winterhude, Hamburg, Germany.

Wasserturm Hamburg-Winterhude is a 64.5-metre red-brick tower at the northwestern end of the Stadtpark's 1400-metre main axis. Its round upper drum sits on a rectangular front block, with colossal arches and niches facing the park and an open gallery widening the base. Inside stood a spherical wrought-iron tank 23 metres across holding 3000 m³.

The tower was built between 1912 and 1915 under the direction of Fritz Schumacher to store water for the city. After 1924, it lost its original function when modern pressure systems took over water supply operations.

The structure showcases Wilhelmine monumental design combined with reform architecture, built from red brick above a limestone base. The tower's cylindrical form reflects its past function and remains a defining landmark at the entrance to the city park.

The tower has housed a planetarium since 1930 and offers visitors access to an observation deck at 42 meters height. From this platform, you can enjoy panoramic views over the city park and the surrounding Hamburg area.

The water tank was a wrought-iron spherical-bottom vessel 23 metres across, holding 3,000 cubic metres; its usable height of 45 metres made it the second-largest tank among Hamburg's water towers after Sternschanze. From 1970 to 2002, rooms beside the middle balcony served the Gesellschaft für volkstümliche Astronomie as an amateur observatory.