The windows, which bathe the sanctuary in a rainbow of light, have been undergoing restoration since last year. Conservationists from Norton Arts have restored them to their original beauty.
The windows were purchased in 1908 from Ford Brothers Glass Co. in Minneapolis. More than 30 windows hang in the sanctuary, foyer, stairwells and belfry.
Sunday's open house from 2 to 4:30 p.m. will be followed by another one from 11:30 a.m. to 1:30 p.m. April 30.
On Sunday, representatives of Norton Arts will speak about the stained-glass heritage and the conservation and restoration process. Refreshments will be served.