The Troy Historic District includes 15 residences, the Troy Hills School, and the Troy Industrial Hamlet Ruins, a historic archeological site. Industrial structures and residences were built near each other, and many dwellings face Troy Brook, reflecting the principal role that water-powered industries played in the village's industrial and commercial development. The homes, dating from ca. 1720 - 1920, exemplify popular Georgian, Federal, and Greek and Gothic Revival style architecture.