From the record
“The United Unitarian and Universalist Church in Mukwonago, Wisconsin is a Victorian Gothic-styled church and meeting hall built in 1878 - the only Yankee-built church remaining in the town. In 1987 it was added to the National Register of Historic Places for its significance in architecture and social history.”
Wikipedia article United Unitarian and Universalist Church, CC BY-SA 4.0.
One of 153 National Register listings published here for Waukesha County · listed in 1987 · category: Building · built in 1879, Gothic Revival.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

