Elliottville Lower Mill

Killingly is a town in Windham County, Connecticut, United States. Killingly is the largest town by population in the Northeastern Connecticut Planning Region. The population was 17,752 at the 2020 census. It consists of the borough of Danielson and the villages of Attawaugan, Ballouville, Dayville, East Killingly, Rogers, and South Killingly.

Killingly High School is a public high school in Killingly, Connecticut. The school reported 792 students and 65 FTE classroom teachers for the 2014–2015 school year. Killingly High is the only public high school in the Killingly School District, which is on the eastern edge of Windham County. It also serves the nearby town of Brooklyn. For 2015, the community voted to make the school the sole polling place in Killingly. The Secretary of State informed the town registrar's office that this was a misinterpretation of statute, and in 2016, a second polling place was opened at the school's old location.Sports at the school are done as part of the Eastern Connecticut Conference.Killingly High was included in a segment of the reality TV series The Principal's Office in 2009.Old Killingly High School was built in 1908 and used by the school until 1965. The second building was then used until 2010 and continues to act as the site of an alternative learning program and the school district's central office. The first building was listed on the National Register of Historic Places in 1992 and is now the town's community center.

The Dayville Historic District encompasses a collection of mid-19th century architecture in the Dayville village of Killingly, Connecticut. It is clustered around the junction of Main and Pleasant streets, extending along Main to High Street. The area flourished in the mid-19th century, as a consequence of the railroad being routed nearby, serving area textile mills. The district, residential except for a church, was added to the National Register of Historic Places in 1988.

Killingly Pond State Park is a public recreation area encompassing 162 acres (66 ha) in the town of Killingly, Connecticut. The state park sits on the western side of Killingly Pond, a 122-acre (49 ha) body of water that straddles the state line between Connecticut and Rhode Island. The park offers boating, fishing, hiking, and hunting.

The Daniel's Village Archeological Site is a historic industrial archaeological site in Killingly, Connecticut. Located in the vicinity of the crossing of Putnam Road and the Five Mile River, the area is the site of one of the earliest textile mills in Connecticut. The mills burned in 1861 and were not rebuilt, ending the village's economic reason to exist. The site was added to the National Register of Historic Places in 1978. The entire site was purchased in 2015 by a historic building expert who has put the original parcel back together. It is now private property. The area was settled in the early 18th-century, and has an industrial history dating to the 18th century, when a gristmill known as Talbot's Mill was operating at the site. In 1814, local landowners combined with investors from Rhode Island to establish a cotton mill at the site. It was first known as Howe's Factory, after its managers, and was acquired by the Daniels family in 1845. By this time, the village had grown to include a store, blacksmith's shop, at least nine buildings for worker housing, and three separate mill buildings. The mill buildings burned in 1861, and were not rebuilt. The Daniels family sold the property in 1888, and its remnants were reduced to ruins by the early 20th century.Visible elements of the site include the early 19th century stone dam, and the stone house at the corner of Putnam and Stone Roads. The house was built after the 1814 purchase, and is basically Georgian in style, with a gabled roof and five-bay main facade. Also found at the site are foundational remnants of the mill, including portions of the tailraces of both the grist and cotton mills. Arrayed near the stone house are foundational remains of some of the worker housing.

Dayville is a census-designated place (CDP) in the northwest part of the town of Killingly in Windham County, Connecticut, United States. It is located on the east side of the Fivemile River, 5 miles (8 km) north of Danielson. Interstate 395 passes through the east side of the CDP, leading south to Norwich and north to Auburn, Massachusetts. Dayville was first listed as a CDP prior to the 2020 census.The Dayville Historic District occupies 15 acres (6.1 ha) at the center of the village.

Broad Street – Davis Park Historic District is a historic district in the borough of Danielson, in the town of Killingly, Connecticut. The district is mainly residential in character, and includes Davis Park, a 1.9-acre (0.77 ha) triangular park created in 1890 and bounded by Main, Reynolds, and Broad Streets. The district as a whole is 30 acres (12 ha) in size. It includes examples of Stick/Eastlake, Queen Anne, and Colonial Revival architectural styles and was added to the National Register of Historic Places in 1998. It includes 95 contributing buildings, one contributing site, and four contributing objects. The district is significant for its architecture, which includes many examples of Victorian architecture with rich detailing. The buildings in the district also reflect the institutions and people responsible with the development of Danielson. The town's growth began in 1809, when brothers James and Hezekiah Danielson built a cotton spinning mill. The house of Hezekiah, built about 1825, is the oldest building in the district. The village's growth was further fueled by other textile mills, the completion of the Norwich and Worcester Railroad through town in 1830, the establishment of other businesses, and the expansion of the textile mills from the 1850s onward. The houses in the Broad Street-Davis Park area were built by middle and upper-class residents, who chose the latest architectural styles and built large houses. The area also was above the river terrace, providing fine views and flood protection.: 12–13 It includes the Old Killingly High School building, which is separately listed on the National Register, and two churches: the 1891 Gothic St. Alban's Church, and the 1960s Baptist Church, the latter of which is not historically significant.

The Five Mile River is a 23.5-mile-long (37.8 km) river located in Connecticut's northeast corner which flows through the towns of Thompson, Putnam, and Killingly. The original Nipmuc name was Assawaga, meaning "place between" or "halfway place". The Assawaga received its English name from the fact that the first land laid out upon it was "supposed to be about five miles from" Woodstock, Connecticut. The Five Mile is a tributary of the Quinebaug River and is part of the Thames River watershed. Its source is Little Pond (also known as Schoolhouse Pond), close to the Massachusetts border. It empties into the Quinebaug River at Danielson, near the intersection of Connecticut Route 12 and U.S. Route 6. The Five Mile River has several dams, most of which are remnants of defunct mills and some of which are still used by local industry. Its largest impoundment is Quaddick Reservoir. The best examples of surviving mill villages are Killingly in villages such as Pineville, Ballouville, Attawaugan, and Dayville.

Temple Beth Israel is an historic former Orthodox and Conservative Jewish synagogue building, located at 39 Killingly Drive in the Danielson village of Killingly, Connecticut, in the United States. Built between 1951 and 1961 to a design by Boston, Massachusetts architect William Riseman, it is one of the first Modernist synagogues built in Connecticut. It was built in part by members of its congregation, many of whom were survivors of The Holocaust, and was formally dedicated on June 5, 1961 after ten years of construction. The congregation was a mix of Orthodox and Conservative adherents, and was merged with a congregation in Putnam in 2003. The building was listed on the National Register of Historic Places in 2013, and it has served as a cultural historical center, managed by a non-profit organization since 2009.

The Old Westfield Cemetery is located at 320 North Street in the Danielson borough of Killingly, Connecticut. The cemetery was established in 1720, not long after Killingly's incorporation (1708). It occupies a 10-acre (4.0 ha) parcel on the north side of North Street, and is bounded in part by the Five Mile River. Its main entry is marked by granite pillars placed in 1920, giving access to a perimeter road. The cemetery is laid out in a form typical of 18th-century and early 19th-century, with graves lined up in relatively even rows, avoiding the mid-19th century rural cemetery movement. Most of its 450 graves date to the 19th century. The cemetery was listed on the National Register of Historic Places in 2010.Killingly was settled in 1707, when James Daniels purchased the area between the Quinebaug River and the Rhode Island border from James Fitch. Daniels is considered the founder of the village of Danielson, and is buried in this cemetery. It was laid out in 1728, and remained in continuous use until about 1900, when additional space on the south side of North Street was added. Most burials now take place in the modern southern parcel, although burials still take place in family plots in the old section. About 15% of the graves date to the 18th century, typically with slate stones carved with cherubs or winged soul effigies. The larger number of 19th-century burials have a wider variety of monuments, including the use of granite and marble. The most elaborate family monument is that of the Atwoods in the northeast quadrant, which features a Classical statue and drapery.

Quinebaug Valley Community College (QVCC) is a public community college in Danielson, Connecticut.

The Old Killingly High School is a historic school building on 185 Broad Street in the Danielson section of Killingly, Connecticut. Built in 1908 and enlarged in 1927, it served as the town's high school until 1965, and then its junior high school until 1990. It is a significant local example of Renaissance and Colonial Revival architecture, designed by Hartwell, Richardson & Driver. It was listed on the National Register of Historic Places in 1992. It now houses the Killingly Police Department.