Windham Textile and History Museum

The Jillson Mills (Officially known as the Willimantic Linen Company Mill Complex) is a mill complex in Willimantic, Connecticut. The mills produced cotton thread throughout the lifespan of the operation of the mill.

Natchaug Elementary School is a public elementary school in Willimantic, Connecticut, United States. The school opened in 1865 at the junction of Milk Street and Jackson Street, in downtown Willimantic. It is part of the Windham Public School system and one of four elementary schools and a K-8 STEM magnet school. Natchaug is accredited by the New England Association of Schools and Colleges. The name Natchaug comes from the Nipmuc word meaning "land between the rivers." The school colors are bright green and blue.Natchaug is a public school open to students from kindergarten through fifth grade, after which they move on to Windham Middle School. In the 2021-22 school year there were 278 enrolled students in grades K-5. With 26 classroom teachers, the school has a student-teacher ratio of about 11:1. Natchaug also has a Family Resource Center and before- and after-school programs for its students. Natchaug is a neighborhood school; most students walk to school, although a few school buses are provided.

Jillson Square Park is park located in Willimantic, Connecticut. It holds the William Jillson Stone House on its area, and is home to the Willimantic Carnival. The park was created after the Windham Historical Society bought the property in 1972, and gave the area to the Town of Windham Recreation Department for park development. The park was the former land of William Jillson, the creator of the Jillson Mills nearby. The Air Line Trail starts less than 200 feet (61 m) away from here.

The Frog Bridge (officially known as the Thread City Crossing) is a bridge located in Willimantic, Connecticut which carries South Street (CT 661) across the Willimantic River. It is known as the Frog Bridge because it has four copper frog sculptures on each end of the bridge, sitting on concrete thread spools. The sculptures were designed and created by artist Leo Jensen of Ivoryton, Connecticut.

The William Jillson Stone House is a historic house museum at 561 Main Street inside Jillson Square Park, in the Willimantic section of Windham, Connecticut. Built in 1825–27, it is a rare local instance of a stone house, built by one of the area's early industrialists. It is now maintained by the Windham Historical Society, and was listed on the National Register of Historic Places in 1971.

The Willimantic Elks Club is a historic Elks lodge at 198 Pleasant Street in the Willimantic section of Windham, Connecticut. Built in 1925 for a lodge founded in 1914, it is one of the finest examples of Tudor Revival architecture in the region, and has been a major site of social events in the community since. The building was added to the National Register of Historic Places in 2005.

The Willimantic Footbridge is a pedestrian bridge in the Willimantic section of Windham, Connecticut. Built in 1906, it extends from Main Street southward, across Riverside Drive, railroad tracks, and the Willimantic River, connecting downtown Willimantic to the residential area south of the river. It is one of a small number of pedestrian bridges built in the early 20th century to survive in the state. It was listed on the National Register of Historic Places in 1979.

The Prospect Hill Historic District encompasses a large residential area in the Willimantic section of Windham, Connecticut. Located north of the Main Street commercial district, it was developed between about 1865 and 1930, and is one of the state's largest historic districts, with more than 800 contributing buildings. It is roughly bounded by Valley, Jackson, Bolivia, Washburn, Windham, and High Streets, and contains one of the state's largest single concentrations of Victorian-era residential architecture. It was listed on the National Register of Historic Places in 2003.

The Main Street Historic District encompasses the historic portion of the central business district of Willimantic, in Windham, Connecticut. The district encompasses the commercial business district of Willimantic and is roughly linear along Main Street (Route 66) and Riverside Drive between Church Street and Bridge Street. It was first listed on the National Register of Historic Places in 1982. Its area was increased in 1992 to include the Hall and Bill building on North Street, built in 1889 by one of Willimantic's leading printers.

Willimantic Armory is a historic armory building on Pleasant Street in Windham, Connecticut. It served the Connecticut National Guard from 1913 until 1980 when the building was sold to developers who converted the building into apartments.

The Willimantic Post Office is a former post office located in Willimantic, Connecticut. The post office was built between 1910 and 1912, and was used until 1966; when a new post office was built a block away. The Willimantic Brewing Company purchased the building in 1997 and converted it into a pub.

The Windham Town Hall is a town hall in Willimantic, Windham, Connecticut, United States.