The Middlesex Canal was a 27-mile (44-kilometer) barge canal connecting the Merrimack River with the port of Boston. When operational it was 30 feet wide, and 3 feet deep, with 20 locks, each 80 feet long and between 10 and 11 feet wide. It also had eight aqueducts.
Two 19th century factory buildings are sited on a bank beside Starr Mill pond on Beverly Heights just off Middlefield Street. Each building is 3½ stories tall, and overlooks a picturesque pond and woods to the west; a parking lot packed with trucks and industrial equipment on the south; and nineteenth century housing on Beverly Heights to the north.
The Renfrew Mill No. 2 was a historic mill complex at 217 Columbia Street in Adams, Massachusetts. Most of its buildings were built between 1867 and 1878, and were brick buildings with Italianate styling. They were built by the Renfrew Manufacturing Company, a textile manufacturer, to replace an earlier complex further down Columbia Street that had been demolished. The property was acquired by the Arnold Print Works in 1928. The mill was the town's largest employer for much of the second half of the 19th century.
District A is a historic worker housing district located in Manchester, New Hampshire, near the former Amoskeag Manufacturing Company millyard. It is bounded by Pleasant, State, Granite, and Bedford streets, and includes seven surviving tenement blocks built by Amoskeag between 1843 and 1852. The district was added to the National Register of Historic Places on November 12, 1982.
District C is a historic worker housing district located in Manchester, New Hampshire, near the former Amoskeag Manufacturing Company millyard, and surrounding area. It is roughly bounded by N. Hampshire Lane, Hollis, Canal, and Bridge streets, and was added to the National Register of Historic Places on November 12, 1982. It originally contained nine rowhouses in an area of approximately 5 acres (2 ha); three have subsequently been demolished and replaced by an apartment complex.
District D is a historic worker housing district located in Manchester, New Hampshire, near the former Amoskeag Manufacturing Company millyard. It is roughly bounded by Canal, Langdon, Elm, and West Brook streets, and was added to the National Register of Historic Places on November 12, 1982. It contains three residential buildings constructed in 1864 in an area of about 3 acres (1 ha).
District E is a historic worker housing district in Manchester, New Hampshire, near the former Amoskeag Manufacturing Company millyard, at 258-322 McGregor Street on the west bank of the Merrimack River. It consists of five single-family houses, built in 1882 for overseers at the mills. It was added to the National Register of Historic Places on November 12, 1982.
The Eagle Hotel is a historic hotel building at 110 North Main Street in Concord, New Hampshire. Built in 1851, it has been a prominent local landmark since then, and a meeting place for state politicians, given its location across the street from the New Hampshire State House. The building was listed on the National Register of Historic Places in 1978.
The New York Belting and Packing Co. complex, also known locally for its main 20th-century occupant, the Fabric Fire Hose Company, is a historic industrial complex at 45–71, 79-89 Glen Road in Newtown, Connecticut. Its centerpiece is a four-story brick mill building with an Italianate tower, built in 1856. The property also includes a dam impounding the adjacent Pootatuck River, a mill pond, and a hydroelectric power generation facility.
2+1⁄2 Beacon Street, also known as the former New Hampshire State Prison Warehouse, is a historic commercial building at 2+1⁄2 Beacon Street in Concord, New Hampshire. Built in 1860 and enlarged in 1868, it is the only major surviving element of New Hampshire's first state prison complex, which was mostly torn down in the 1890s. The building was listed on the National Register of Historic Places in 1984.
The Concord Historic District encompasses the least altered portion of the historic heart of Concord, New Hampshire. The 25-acre (10 ha) district, located just north of the modern commercial and civic heart of the city, includes the city's oldest surviving house, the site of its first religious meetinghouse, and the Pierce Manse, a historic house museum that was home to President Franklin Pierce during his rise to national prominence. The district was listed on the National Register of Historic Places in 1975.
The Merrimack County Bank building is a historic commercial building at 214 North Main Street in Concord, New Hampshire. The three-story brick Federal style building was built in 1826 to house the offices of the Merrimack County Bank on the first floor, law offices on the second floor, and a public meeting space above. In 1840, the upper floor was taken over by the New Hampshire Historical Society for use as a library. The Society significantly altered the interior in the early 20th century to convert this space for display purposes. In 1952 the building was acquired by the Christian Mutual Life Insurance Company, which restored the interior to its original Federal appearance, and sold the building to a law firm in the 1970s. The building also housed the law offices of future president Franklin Pierce.
The former Merrimack County Courthouse stands at 163 North Main Street in Concord, New Hampshire, the state capital and county seat of Merrimack County. The oldest part of the courthouse building is a brick and granite two story structure, completed in 1857 to serve as a town hall and court building. The city and county used the building for town offices and county courts until 1904, when the city sold its interest in the building to the county. Between 1905 and 1907 the building was extensively remodeled to plans by local architect George S. Forrest. The courthouse has been listed on the National Register of Historic Places since 1979. As of 2018, a new courthouse had been constructed to the rear of the building, and county offices were to be moved into the original building.
The Jacob Noyes Block is a historic commercial building at 48 Glass Street in the Pembroke side of Suncook, New Hampshire. Built about 1865, it is a distinctive local example of Italianate commercial architecture, and is the largest 19th-century commercial building in the village. It was listed on the National Register of Historic Places in 1986.
The Pembroke Mill, now the Emerson Mills Condominiums, is a historic mill building at 100 Main Street in the village of Suncook in the town of Pembroke, New Hampshire, on the north bank of the Suncook River. Built in 1860, it is an early example of Renaissance Revival mill architecture, and was a major force in the growth of Suncook as an economic center. The mill building, now converted to residences, was listed on the National Register of Historic Places in 1985.
The Hoyt Shoe Factory is a historic factory complex at 470 Silver Street and 170 Lincoln Street in Manchester, New Hampshire. It consists of two once-identical four-story brick factory buildings which face each other across Silver Street. Built in the 1890s, they housed the city's largest shoe manufacturer, an industry that gained in significance as its textile industry declined. The complex was listed on the National Register of Historic Places in 1985.
The Hillsborough Mills are a historic textile manufacturing complex at 37 Wilton Road in western Milford, New Hampshire, near its town line with Wilton. The oldest buildings of the brick mill complex were built in 1866 as a carpet-making operation. This business failed in 1874, but the complex was acquired by other textile interests, and eventual saw success producing carpet yarns, and blankets for horses and bedding. The mills were closed in 1970, and have since been adapted for other uses. The complex was listed on the National Register of Historic Places in 2014.
St George's School and Convent are a historic Roman Catholic complex at 124 Orange Street in Manchester, New Hampshire, United States. Built in 1898–99, they are among the city's finest examples of Romanesque architecture, built to support its burgeoning French Canadian population. The school closed in 1970, after which time the buildings have been used to house social service agencies and act as a community center. The buildings were listed on the National Register of Historic Places in 1985.
The Cocheco Mills comprise a historic mill complex in the heart of Dover, New Hampshire. The mills occupy a bend in the Cochecho River that has been site of cotton textile manufacturing since at least 1823, when the Dover Manufacturing Company supplanted earlier sawmills and gristmills. The present mill buildings were built between the 1880s and the early 20th century, and were listed on the National Register of Historic Places in 2014.
The Concord Gas Light Company Gasholder House is a historic gasholder house at Gas Street in Concord, New Hampshire. Built in 1888, it is believed to be the only such structure in the United States in which the enclosed gas containment unit is essentially intact. It was listed on the National Register of Historic Places in 2018. Since 2012, it has been owned by Liberty Utilities, a gas, water and electric company. In 2022, Liberty struck a deal with the city of Concord and the New Hampshire Preservation Alliance to begin emergency stabilization work on the building, so that planning for protection and future use can continue.
