The Collinsville Historic District is located in Collinsville, Illinois, and is recognized for its well-preserved architecture and historical significance. Established in the late 19th century, the district features a variety of buildings that showcase different architectural styles, including Victorian and Italianate designs. Designated as a historic district, it includes numerous structures that reflect the town's development and cultural heritage. Visitors can explore the area to appreciate its historical context and the role it played in the growth of the Collinsville community, particularly during the coal mining era.