This post from Facebook tells of this great building in St. Croix Falls, Polk County Wisconsin. Being as curious as you are, I’m wondering what exactly was on the 4th floor. (my ideas; below the comments that came with the FB post)

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I am often in awe of the buildings that stood in our county in the 1800s. The St. Croix House or Fisk Hotel/House is no exception. Here it is in the late 1800s. It stood on Adams Street between Kentucky and State in St. Croix Falls. Three floors played host to those in the lumber industry, those coming to the land office in St. Croix, and to those just looking to have fun.