The Yellow River Waterwheel Garden (黄河水车博览园) on the northern bank of the river is a heritage park built around recreations of Lanzhou's famous waterwheel tradition. The giant wooden wheels — some over ten metres tall — turn slowly in the current, lifting bamboo buckets and spilling water in the way they did for centuries before electric irrigation replaced them. The park has a small but well-organized museum about the waterwheel's role in Lanzhou's agricultural history.
The best time to visit is in the morning or late afternoon when the light is good for photography. The wheels themselves are impressive in scale and the setting along the Yellow River is attractive. There is an entrance fee, modest by Chinese standards, and the grounds include reconstructed traditional buildings and food stalls selling local snacks. It is typically combined with the nearby Binhe Park riverfront walk.