Harvard–Adam Dziewonski Observatory

The Oak Ridge Observatory (ORO, code: 801), also known as the George R. Agassiz Station, is located at 42 Pinnacle Road, Harvard, Massachusetts. It was operated by the Center for Astrophysics | Harvard & Smithsonian as a facility of the Smithsonian Astrophysical Observatory (SAO) from 1933 until August 19, 2005.

Harvard is a town in Worcester County, Massachusetts, United States. The town is located 25 miles west-northwest of Boston, in eastern Massachusetts. It is mostly bounded by I-495 to the east and Route 2 to the north. A farming community settled in 1658 and incorporated in 1732, it has been home to several non-traditional communities, such as Harvard Shaker Village and the utopian transcendentalist center Fruitlands. It is also home to St. Benedict Abbey, a traditional Catholic monastery, and for over seventy years was home to Harvard University's Oak Ridge Observatory, at one time the most extensively equipped observatory in the Eastern United States. It is now a rural and residential town noted for its public schools. The population was 6,851 at the 2020 census.

Harvard Shaker Village Historic District is a historic former Shaker community located roughly on Shaker Road, South Shaker Road, and Maple Lane in Harvard, Massachusetts. It was the second oldest Shaker settlement in Massachusetts and the third oldest (after New Lebanon (1787) and Hancock, Mass (1790)) in the United States.

The Harvard Center Historic District is a historic district encompassing the traditional village center of Harvard, Massachusetts, USA. The district is centered on the town common, a triangular grassy space bounded by Elm Street, Still River Road, and Ayer Road. The common is ringed by residences, civic and religious buildings, and a small commercial area. The common was laid out when the town was founded in 1732, and has grown, mainly in periods of growth at the late 18th and late 19th/early 20th centuries. Most of the village's buildings post-date 1831. The district was added to the National Register of Historic Places in 1997.The historic district is roughly cruciform in shape, radiating out from the common along Still River Road (west), Massachusetts Avenue (Massachusetts Route 111) to the north and south, and Oak Hill Road and Old Littleton Road to the east. It covers about 125 acres (51 ha), and includes 59 historically significant houses, that range in architectural styles and age from the 18th to 20th centuries. The main civic buildings are located at the northern end of the common, and include a stone animal pound, a small powder house, and the 1872 Gothic Revival town hall, which stands next to an older (1828) Greek Revival frame building, now a residence, that also served as town hall.The district is home to two church buildings: the 1867 Colonial Revival First Congregational Church, set on the location of the town's first colonial meeting house, and the 1840 Methodist meeting house, now a private residence at 13 Massachusetts Avenue. Two of its architecturally most sophisticated buildings are the Bromfield School (1878, Romanesque Revival) designed by Peabody & Stearns, and the public library (1886, also Romanesque) designed by William Channing Whitney.

The Nourse-Farwell House is located in the Harvard Center Historic District, a U.S. Historic District in the center of Harvard, Massachusetts. The house is believed to have been built in c. 1800 by Harvard resident Benjamin Nourse. The house was sold in 1833 to John Farwell who served as a Harvard town selectman in 1854 and assessor from 1860 to 1863.The house still stands today located on Elm Street located off of the Harvard Town Common.

The Bromfield School is a public school located in Harvard, Massachusetts. Founded in 1878 by Margaret Bromfield Blanchard, the school's student population is approximately 750, in grades 6–12. There are 57 teachers, with a student/faculty ratio of about 1 to 13. Bromfield's academic program includes core courses in mathematics, English, social studies, and science, as well as music, world languages, physical education, and the arts. Students in grades 9–12 fulfill graduation requirements in these core courses and may also take advantage of Advanced Placement courses. The school has a 4-year graduation rate of 98%, sending nearly all graduates on to four-year higher-learning institutions. In 2011, U.S. News & World Report ranked Bromfield School as 87th High School in the nation. Most recently, in 2023, U.S. News & World Report High School rankings had it 154th in the nation, and third within Massachusetts.

The Frederick Fiske Warren and Gretchen Osgood Warren House, known to the family as The Hutch, is a historic house at 42 Bolton Road in Harvard, Massachusetts. Built in 1894, it was the summer home of Frederick Fiske Warren and Gretchen Osgood Warren, who organized a major enclave of Georgist single tax properties in Harvard. The property was added to the National Register of Historic Places in 1996.

Boxborough Old Town Center is a historic district encompassing the historic center of Boxborough, Massachusetts. It consists of a cluster of properties that lie primarily along Hill Road, extending from point a short way north of its junction with Schoolhouse Lane to a bend in road just south Middle Street. The 52 contributing properties range in date from the 1770s to the early 20th century, spanning much of the town's history. The town was bypassed by significant economic development in the 19th century, and has retained much of its rural charm, despite growing suburbanization in the second half of the 20th century. This particular area constituted the civic heart of the town until about 1900, when the current town hall was built in a more central location. It includes the town's oldest cemetery, adjacent to the site of its first meeting house. It also has one the town's five surviving one-room schoolhouses, including a privy which was used into the mid-20th century. The district was listed on the National Register of Historic Places in 2006.

The Levi Wetherbee Farm is a historic farm at 484 Middle Road in Boxborough, Massachusetts. The 36-acre (15 ha) property includes a farmhouse which dates to the mid-18th century (with additions and enlargement in the 19th century), rough fieldstone walls delineating some of its property lines, a c. 1904 icehouse that was relocated from another nearby farm, and heavily rutted car tracks indicating the agricultural use of the property for more than 250 years.The farm was added to the National Register of Historic Places in 2006.

Boxborough is a town in Middlesex County, Massachusetts, United States. The population was 5,506 at the 2020 census. The town name is often simplified to "Boxboro" on highway signs and official documents.

Pingryville is a village in the towns of Ayer and Littleton, Middlesex County, Massachusetts, United States. Massachusetts Route 2A and Massachusetts Route 110 pass through the community. It is named after John Pingry VIII (1799-1860) who was a local farmer and deacon of the church.The community was mentioned in the song "Massachusetts" by Norwegian comedy duo Ylvis.

Littleton (historically Nipmuc: Nashoba) is a town in Middlesex County, Massachusetts, United States. The population was 10,141 at the 2020 census.For geographic and demographic information on the neighborhood of Littleton Common, please see the article Littleton Common, Massachusetts.