North Nashua River

The South Nashua River is a river in Massachusetts that flows 5.1 miles (8.2 km) through Clinton and Lancaster. It starts at the Wachusett Dam on the Wachusett Reservoir and ends by joining the North Nashua River to form the Nashua River.

The Old Settlers' Burying Ground is an historic cemetery off Main Street in southern Lancaster, Massachusetts. Established by 1674, it is the town's oldest formal cemetery, its burials including family members of many early settlers. The cemetery was listed on the National Register of Historic Places in 2019.

The Atherton Bridge is a historic iron truss bridge in Lancaster, Massachusetts, spanning the South Branch of the Nashua River. It is a rare example of a hybrid pony truss that is similar to the 19th century truss design of Simeon S. Post. It was built by J. H. Cofrode & Co. of Philadelphia in 1870. It was the first iron bridge to be constructed in the town. The bridge was added to the National Register of Historic Places in 1979. The bridge formerly carried Bolton Road, but was closed to vehicular traffic in 1975 and bypassed by a modern highway bridge in the 1980s. The bridge remained open to pedestrian traffic until April 2020, when a flash flood damaged the bridge's wooden deck and it was closed to all traffic. The long-term future of the bridge is uncertain.The sign commemorating Atherton Bridge states: ATHERTON BRIDGE There has been a bridge at this location since early settlement. It is named for James Atherton, one of the signers of the petition for incorporation of the town in 1652. The 1794 map lists the bridge as 90 feet long on a county way Lancaster’s first iron bridge was placed here in 1870.

The Middle Cemetery is an historic cemetery on Main Street in southern Lancaster, Massachusetts. Established in 1798, it is the town's third oldest cemetery, with active burials taking place until 1969. The cemetery was listed on the National Register of Historic Places in 2019.

The Lancaster Raid was the first in a series of five planned raids on English colonial towns during the winter of 1675-1676 as part of King Philip's War. Metacom, known by English colonists as King Philip, was a Wampanoag sachem who led and organized Wampanoag warriors during the war. Teaming up with Nipmuc and Narragansett warriors, the Wampanoag successfully raided the town of Lancaster, securing provisions and prisoners to help them carry on into their winter offensive.

The First Church of Christ, Unitarian, also known as First Church of Christ, Lancaster and colloquially as "the Bulfinch Church", is a historic congregation with its meeting house located at 725 Main Street facing the Common in Lancaster, Massachusetts. The church's fifth meeting house, built in 1816, was designed by architect Charles Bulfinch, and was designated a National Historic Landmark in 1977, recognizing it as one of Bulfinch's finest works.

Lancaster is a town in Worcester County, Massachusetts, in the United States. Incorporated in 1653, Lancaster is the oldest town in Worcester County. As of the 2020 census, the town population was 8,441.

The Nathaniel Thayer Estate is a historic house in Lancaster, Massachusetts. Built in 1846 and extensively restyled in 1902, it is a particularly fine example of Georgian Revival architecture, and was added to the National Register of Historic Places in 1976. Since 1946, the estate has been owned by the Seventh-day Adventist Church, which operated Atlantic Union College there until its 2018 closure. The main house is presently home to Thayer Conservatory, bringing community together through music and the arts.

The Center Village District encompasses the historic village center of Lancaster, Massachusetts. Settled in 1643, it has few traces of its early history, but is now a well-kept rural town center with a predominantly residential and civic character. It includes the First Church of Christ, Lancaster, which is a U.S. National Historic Landmark, and was listed on the National Register of Historic Places in 1977.

The Massachusetts Correctional Institution at Lancaster (MCI-Lancaster) was a minimum security prison for men located in Lancaster, Massachusetts in the United States on the site of the former Lancaster Industrial School for Girls. When operational, the prison was under the jurisdiction of the Massachusetts Department of Correction.

The Lancaster Industrial School for Girls was a reform school on Old Common Road in Lancaster, Massachusetts. It was the country's first state reform school for girls, opening on August 26, 1856. The facility provided its charges with separate rooms, arranged in three-story cottages with kitchen, dining, and other public facilities on the ground floor, rooms for the girls and a housemother on the second, and space for teachers on the third floor. This school paved the way of social reform, moving away from child imprisonment towards a correctional paradigm. This was in part achieved because of the observed benefits of environmental change in children, as well as the importance of education plus the added pressures of having to deal with the rise in child delinquency brought by social changes of the industrial age. After its closure in 1975, it was redeveloped into Massachusetts Correctional Institution - Lancaster. The campus was listed on the National Register of Historic Places in 1976.

South Lancaster Academy (SLA) is a co-educational preparatory day school, consisting of grades Preschool through 12, operated by Seventh-day Adventists in South Lancaster, Massachusetts. It is a part of the Seventh-day Adventist education system, the world's second largest Christian school system.