Killingly High School

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.

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.

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.

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.

The Cady-Copp House is an historic house at 115 Liberty Highway in Putnam, Connecticut. Built about 1745 and little altered since, it is an important regional example of vernacular colonial architecture. It was listed on the National Register of Historic Places in 2001.

The Elliottville Lower Mill, also known historically as the Peep Toad Mill, is an historic cotton mill in the East Killingly section of Killingly, Connecticut. Built about 1850, it is a well-preserved example of an early wood-frame textile mill. The mill complex, which includes, a dam, pond, head race, and bridge, was listed on the National Register of Historic Places in 1982.

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

Northeastern Connecticut, better known as the Quiet Corner, is a historic region of the state of Connecticut, located in the northeastern corner of the state. No official definition exists; the term is generally associated with Windham County, but also sometimes incorporates eastern sections of Tolland County and the northern portion of New London County.

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.

Harvard H. Ellis Technical High School, or Ellis Tech, is a technical high school located in Danielson, Connecticut. It is part of the Connecticut Technical Education and Career System. Founded in 1916 as the Putnam Trade School, it was the first technical school in Connecticut to have its own building. It is in the Connecticut Technical High School System. It receives students from many nearby towns.The current school building was constructed in 2014. The building underwent renovations to add 30,000 square feet of new floor space as well as a new gymnasium, a classroom wing, a media center, and a culinary arts program space.

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.

Putnam is a town in Windham County, Connecticut, United States. The town is part of the Northeastern Connecticut Planning Region. The population was 10,214 at the 2020 census.