- ... that the marble column used for the Civil War Memorial in Adrian, Michigan, was originally part of the former Bank of Pennsylvania building in Philadelphia?
- ... that the Pithole Stone Arch Bridge is unusual for being surprisingly well built for only a rural backroad, but was initially thought to be of inferior quality and was not expected to last?
- ... that the present-day location of Washington & Jefferson College in Washington, Pennsylvania, was the result of a decision by the Supreme Court of the United States?
- ... that since the superstructure of Johnstown's Cathedral of St. John Gualbert was laid using nearly 590,000 pounds (270,000 kg) of steel, the roof was able to be completed before the foundation walls?
- ... that a village in Pennsylvania got its name from an incident involving nitroglycerin torpedoes?