The Harrisville Historic District is a designated area in Harrisville, New Hampshire, known for its well-preserved 19th-century architecture. The district features a variety of historic buildings, including homes, churches, and commercial structures that reflect the town's rich history and cultural heritage. Established in the mid-1800s, the district showcases the architectural styles of the period, such as Greek Revival and Victorian. The area is recognized for its significance in the development of the local community and serves as a reminder of the town's past, attracting visitors interested in history and architecture.