Great Berlin Wheel, unbuilt Ferris wheel project in Berlin, Germany

The Great Berlin Wheel was a planned 175-metre observation wheel for a site on Hertzallee, about 300 metres north of Zoologischer Garten station, on land sold by the zoo. Its 28 glass-and-steel capsules, each 4.70 by 11.60 metres and weighing some 18 tonnes, were to hold up to 40 people. The hub was to rest on 106-metre supports, with a terminal designed by pott architects.

The district office of Mitte granted the building permit on 22 October 2007, and on 3 December 2007 Berlin's governing mayor Klaus Wowereit performed a symbolic first spadeful of earth at the Hertzallee site. Investors then named 2011 as the target date, but construction never began. The financing fund was dissolved at the end of 2010, and the project was abandoned.

The wheel was planned for a former service yard of the Zoological Garden on Hertzallee, about 300 metres north of Zoologischer Garten station. The zoo used the proceeds from selling the plot to build a new animal supply building. Critics feared the lighting could disturb the animals' day-night rhythm, a concern the zoo rejected.

The ferris wheel does not exist today and cannot be visited since construction never took place. It remains an architectural project known only through historical images and plans.

The wheel was to be cable-spanned, with a 25-metre-long, 5-metre-diameter hub carried by 106-metre supports, and the whole structure would have weighed about 4,200 tonnes. Each of the 28 glass-and-steel capsules, measuring 4.70 by 11.60 metres, was to weigh around 18 tonnes.