St. Matthias Episcopal Church - Credit: Wikimedia Commons
St. Matthias Episcopal Church is a Gothic Revival-styled limestone-clad church built from 1851 to 1855 in Waukesha, Wisconsin. It was built by St. Matthias parish of the Episcopal Church, now in the Diocese of Milwaukee, and is the oldest church building in Waukesha that survives basically intact. Read more on Wikipedia
Source: en.wikipedia.org