The Hazardville Historic District is a historic district in the Hazardville section of Enfield, Connecticut, United States, that is listed on the National Register of Historic Places. Description The district consists of what was essentially a company village associated with the manufacture of gunpowder between 1835 and 1913. It is an irregularly shaped area of historic resources that surround two interior areas that are not historical. The historic district encompasses a section of Hazard Avenue (Connecticut Route 190 and adjacent roads, as well as a now-parklike section of the banks of the Scantic River, where the operations of the Hazard Powder Company were located. The district is dominated by four public buildings constructed of brick with brownstone trim: a public school, the Hazardville Institute, the former St. Mary's Episcopal Church, now incorporated as Holy Trinity Episcopal Church, and the Hazardville United Methodist Church. The school and the institute are both of Italian Renaissance Revival design and were built in 1864 and 1869, respectively. The Episcopal church is a Gothic Revival structure built in 1863. The Methodist church, built in 1872, is in the Romanesque Revival style. The public school is now used as a day care center. A former horse barn of the Hazard Powder Company, located at 32 South Maple Avenue, was turned into a square dancing hall in 1959 and is now used as a venue for special events. The foundations of 21 buildings of the original gunpowder factory complex (originally 200 buildings) can still be found near the Scantic River within Scantic River State Park. The Hazardville Institute building, at the corner of Hazard and Maple avenues, was used for many years as a public hall and community center. It was abandoned in the 1970s and was saved from demolition when it was leased to the Hazardville Institute Conservancy. The building is currently undergoing renovation. When renovation is complete, there are plans for the building to include an exhibit about the history of the Hazard Powder Company. The district was listed on the National Register of Historic Places in 1980. Partial building listing Other significant contributing properties in the district include: 7 Cooper Street, from 1850 9 Cooper Street, from 1850 269-271 Hazard Street, Greek Revival from 1840, with additional Greek Revival wing added later 273-275 Hazard Street, vernacular with Greek Revival elements, from 1845 325 Hazard Street, 1850, Greek Revival and Italianate 329 Hazard Street, 1865,