Wallace-Cross Mill is a historic grist mill located at East Hopewell Township, York County, Pennsylvania. It was built in 1826, and is a 2 1/2-story, frame building on a stone foundation. It has a gable roof with decorative bargeboard. It has an 11 feet in diameter, 4 feet wide, steel water wheel to run the machinery. The mill was given to York County by its owner in 1979.[3]