Administration Building, Washington and Jefferson College - Credit: Wikimedia Commons
McMillan Hall is a building on the campus of Washington & Jefferson College in Washington, Pennsylvania, United States. Built in 1793, it is the only surviving building from Washington Academy. It is the eighth-oldest academic building in the United States that is still in use for its original academic purpose and is the oldest surviving college building west of the Allegheny Mountains. Read more on Wikipedia
Source: en.wikipedia.org