From the record
“Dells of the Eau Claire County Park is in the north-central Wisconsin Town of Plover, east of the city of Wausau. It is divided in two by the Eau Claire River.”
Wikipedia article Dells of the Eau Claire County Park, CC BY-SA 4.0.
One of 33 National Register listings published here for Marathon County · listed in 2016 · category: District · built in 1923, National Park Service rustic.
Sources: the Wikipedia article · the National Register database, National Park Service