Lawrence Experiment Station

The Great Stone Dam (also called the Lawrence Dam or Lawrence Great Dam) was built between 1845 and 1848 on the site of Bodwell's Falls on the Merrimack River in what became Lawrence, Massachusetts. The dam has a length of 900 feet (270 m) and a height of 35 feet (11 m).Lawrence is in Essex County, Massachusetts, approximately 25 miles (40 km) north of Boston and only a few miles south of the New Hampshire border (Salem), located in the Merrimack Valley. The dam is 11 miles (18 km) downstream from Lowell and is visible from Route 28 (Broadway) in Lawrence and from behind the Pacific Paper Mill (now defunct).The dam feeds two canals (North, re-built in 1848, and South, completed in 1896). At their peak, the North Canal provided up to 13,000 horsepower and the South Canal 2,000 horsepower; the Essex Company sold "mill rights" to its water power, allowing mills to use the energy provided. The North Canal existed before the dam, but was redeveloped both to better feed the mills and to accommodate the 30-foot (9.1 m) drop caused by the dam. About a mile in length, the canal had a guard lock and three lift locks with mitered gates. The locks were abandoned in the 1960s.Today the dam is the site of a hydroelectric plant, completed in 1981, which is owned by Central Rivers Power USA (now parent company of the Essex Company, which still owns the dam) and the Lawrence Hydroelectric Associates.

The Lawrence bathhouse tragedy occurred on June 30, 1913, when the railings of a runway leading to a municipal bathhouse in Lawrence, Massachusetts gave way and sent 50 to 75 boys into the Merrimack River, causing 11 of them to drown.

The former Daniel Saunders School is a historic school building at 243 S. Broadway in Lawrence, Massachusetts. The two story Classical Revival building was built in 1931, replacing a previous school building on the same site that was destroyed by fire. It is faced in yellow Flemish brick, trimmed with cast stone, over a concrete block frame. The main entrance is in a slightly projecting bay that extends the full height of the building, topped by a triangular pediment and flanked by pilasters. The side ends of the building also have slightly projecting central bays, with round arch windows on the second floor and doorways topped by pedimented hoods with scrolled brackets.The school, like the one it replaced, was named for Daniel Saunders, a key figure in the founding of Lawrence and the town's first treasurer. This building was designed by local architect Joseph G. Morissette, who is known primarily for his ecclesiastical projects. It was one of three schools whose construction was authorized in June 1931, which were built for a combined cost of about $174,000.The Saunders School served the first through third grades for most of its life, but in its later years served only as a kindergarten facility. It was formally closed in 2006, and sold in 2009. It has been rehabilitated to provide sixteen housing units for homeless families; it is the first facility of this type in the state.The building was listed on the National Register of Historic Places in 2011.

The Blakeley Building is a historic commercial building at 475-479 Essex St in central Lawrence, Massachusetts. It is the only well-preserved 19th century remnant of a streetscape that extended for the entire block. The four story Classical Revival building was built in 1898 for Richard Barlow, at that time completing the block between Franklin and Hampshire Streets. Since then, the other buildings have either been demolished and replaced, or have been altered substantially. Construction is predominantly in brick, with granite and metal trim elements. The building houses retail establishments on the ground floor and office space on its upper floors.The building was listed on the National Register of Historic Places in 2009.

The American Woolen Mill Housing District is a residential historic district at 300–328 Market Street in Lawrence, Massachusetts. It consists of nine three story multiunit tenements built in the first decade of the 20th century. They are situated in a roughly oval pattern around a central courtyard, a distinctive pattern designed to provide open space while maximizing housing density. The property was designed by local architect James E. Allen, and had features unusual for tenements, including gas heat and indoor plumbing.The district was listed on the National Register of Historic Places in 1982.

Lawrence is a city located in Essex County, Massachusetts, United States, on the Merrimack River. At the 2020 census, the city had a population of 89,143. Surrounding communities include Methuen to the north, Andover to the southwest, and North Andover to the east. Lawrence and Salem were the county seats of Essex County, until the state abolished county government in 1999. Lawrence is part of the Merrimack Valley. Manufacturing products of the city include electronic equipment, textiles, footwear, paper products, computers, and foodstuffs. Lawrence was the residence of the poet Robert Frost for his early school years; his essays and poems were first published in the Lawrence High School newspaper. Lawrence is also the birthplace of composer and conductor Leonard Bernstein in 1918, and singer Robert Goulet in 1933.

The Gleason Building (now known as G Lofts) is a historic commercial building located at 349-351 Essex Street in Lawrence, Massachusetts.

The North Canal Historic District of Lawrence, Massachusetts, encompasses the historic industrial heart of the city. It is centered on the North Canal and the Great Stone Dam, which provided the waterpower for its many mill complexes. The canal was listed on the National Register of Historic Places in 1975, while the district was first listed in 1984, and then expanded slightly in 2009.The city of Lawrence was founded by industrialist Abbott Lawrence and the associates of the Essex Company as a model industrial city. In 1845 they company acquired land from then towns of Methuen and Andover and began construction on the North Canal and the Great Stone Dam. The work included dredging and building out of "new land", and effectively created a small island between the Merrimack River and the canal, whose outlet is at the mouth of the Spicket River. Work on these two major features was completed in 1848, and development of the city, which formally incorporated in 1853, proceeded from there. The historic district encompasses, in addition to the canal and the dam, the mill-related buildings on the island and on the north side of the canal, as well as a few buildings that front on Methuen and Union Streets, or the connecting side streets. The 2009 expansion of the district, included a single building, the Morehouse Bakery building at 5-9 Mill Street.

The American Woolen Company Townhouses are a collection of brick townhouses built c. 1907 by the American Woolen Company in Lawrence, Massachusetts. They were part of a program of company-built housing between 1906 and 1910 that included the nearby American Woolen Mill Housing District. The townhouses are located on a series of short streets off Market Street in South Lawrence. A historic district comprising these six buildings was listed on the National Register of Historic Places in 2012.The townhouses stand on a large parcel of land 100 feet (30 m) deep, with 475 feet (145 m) of frontage on Market Street. The lot has been divided into three sections, each of which contains two townhouses facing each other across a central private road (Wood Way, Washington Way, and Prospect Way). The short ends of the townhouses face Market Street. When originally built the central areas provided foot access to the units, but they have been paved over and are now used for parking.The six buildings are identical in all major details, and were designed by local architect James E. Allen. Each one is a two-story brick 98 feet (30 m) long and 39 feet (12 m) deep, and houses seven living units. Each unit presents 14 feet (4.3 m) of frontage into the central area. There are minor variations in the front facades of the units. In some cases the entries of adjacent units are paired, and some entries or entry pairs are sheltered by a pilastered pediment. The rear of all units was substantially identical: a recessed porch, set under a segmented arch, provided access to the unit's back door.

The Sacred Heart Parish Complex is a historic former Roman Catholic church complex located at 321 S. Broadway in Lawrence, Massachusetts. It consists of five buildings built between 1899 and 1936, including a fine Gothic Revival stone church. A historic district encompassing the complex was listed on the National Register of Historic Places on November 29, 2011. The complex was sold by the Roman Catholic Archdiocese of Boston in 2004 in order to help pay for the liabilities related to the sex abuse scandal, payouts for the scandal so far is approximately $4,000,000,000 (4 billion) church wide.

Holihan Brothers of Lawrence, Mass. began as a producer of whiskeys in 1856. They operated the Diamond Spring Brewery from 1912 until around Prohibition and then opened after Prohibition in 1933. They produced beer and ales under the Holihan's and Diamond Spring labels. The company also made soda beginning in 1917.

The Emerson House is a historic house located at 58 Ayers Village Road in Methuen, Massachusetts. It is set in a rural corner of northeastern Methuen, near the town line with Haverhill.