The Herman C. Timm House, located in "downtown" New Holstein, has been listed on the National Register of Historic Places since 1996. The house is a significant example of Queen Anne Style architecture called stick style architecture. It was initially constructed in 1873 with an addition completed in 1892. The Timm House is open on Saturdays and Sundays from the first weekend in May through the final weekend in October from 1 to 4 PM. It is also open during the month of December for the Timm House Christmas.