Lehigh University students know Christmas-Saucon Hall as the oldest building on campus. Before it became an academic building, however, it was a place of worship. Moravians had constructed the building to house their growing congregation and serve the South Bethlehem community. The building was nearing completion around the time of Lehigh University’s founding in 1865. As a result, the church sold their building to the university in 1866 and moved to a site to the north of Packer Avenue. Two church buildings occupied the property on Packer Avenue.