Newton Street Bridge

The Potter–O'Brian House was a historic house at 206 Newton Street in Waltham, Massachusetts. The 2+1⁄2-story brick house was built c. 1850, and was the city's only brick Italianate house. One of the older houses on the city's South Side, it was built when the area was still part of Newton. At the time Waltham purchased the territory from Newton, Edward Potter owned the house. It was owned by the O'Brian family for many years.The house was listed on the National Register of Historic Places in 1989. It has since been demolished, but continues to be listed on the National Register.

The American Watch Tool Company is a historic factory complex at 169 Elm Street in Waltham, Massachusetts. The company was founded in 1877 as a spin-off from the successful American Watch Company, and was used for the production of watchmaking tools until 1904. The four-building complex traces the evolutionary history of this business. The factory was listed on the National Register of Historic Places in 1989.

The Lawton Place Historic District is a historic district on Lawton Place between Amory Road and Jackson Street in Waltham, Massachusetts. The district preserves some of the nation's oldest textile mill worker housing. The duplex houses located on the south side of Lawton Place were built c. 1815-17 by the Boston Manufacturing Company (BMC), the first mill to process textiles entirely under one roof. They were originally located at what is now the Waltham Common, and were moved to Lawton Place in 1889. On the north side stands a rowhouse that was built in 1889; it is the last instance of a type of row housing that was once commonly built for mill workers. The district was listed on the National Register of Historic Places in 1989.

Boston Manufacturing Company Housing are historic residential housing blocks at 380–410 and 153–165 River Street in Waltham, Massachusetts. The housing was for the Boston Manufacturing Company (BMC), the earliest modern manufacturing facility in the United States. The housing was built in the nineteenth century and the two blocks of buildings were separately added to the National Register of Historic Places in 1989.

The John E. Olcott House is a historic house at 35–37 Central Street in Waltham, Massachusetts. Built c. 1837, the two story house is a rare local example of Federal style executed in brick. The house was built and occupied by John Olcott, a bricklayer, and is essentially vernacular in its styling, lacking some of the flourishes found in the more elaborate Elijah Fiske House. It is five bays wide, with a shallow-pitch hip roof, twin chimneys, and a projecting enclosed entry vestibule.The house was listed on the National Register of Historic Places in 1989.

The Waltham Gas and Electric Company Generating Plant is a historic power company generator building at 96 Pine Street in Waltham, Massachusetts. Built c. 1900–1909, this large concrete-and-stone building is an essentially unaltered early power generation plant, although all of its window openings have been filled with concrete. It originally housed a steam power generator, and was sold by Waltham Gas and Electric to Boston Edison, who converted it to an electrical substation in 1917, a role it continues to fulfill.The building was listed on the National Register of Historic Places in 1989.

The Gilbrae Inn is a historic residential building in Waltham, Massachusetts. It was built as a two-story wood-frame structure by the Boston Manufacturing Company sometime between 1827 and 1854 as a boarding house for its workers. In c. 1870 the mansard roof and third floor were added. It is the only known surviving boarding house built by the company. Its name derives from a cloth pattern manufactured by the company.The building was listed on the National Register of Historic Places in 1989.

The Richard Holbrook Houses are a pair of joined historic houses at 29 and 31 Heard Street in Waltham, Massachusetts. Both are 1+1⁄2-story Greek Revival cottages, that once had detailed styling, which has since been lost or sided over. The two houses were built in 1844 by Richard Holbrook, a housewright, and are rare surviving examples of a once-common form. The houses went through separate ownerships until 1892, when Patrick Welch acquired the second after acquiring the first in 1886. He was probably responsible for building the central connecting section.The houses were listed on the National Register of Historic Places in 1989.

The Waltham Gas Light Company was a historic industrial facility located at 2 Cooper Street in Waltham, Massachusetts. It was one of the oldest industrial complexes on the South Side of the city, with brick buildings dating to 1854–55, not long after the founding of the company. The Waltham Gas Light Company was founded in 1853 to provide natural gas for "illumination, fuel, and power" to the area. In 1886 the company added an electrical generation plant to the property, which lay in an area roughly bounded by the Charles River, the Boston & Maine railroad right-of-way, and Cooper Street, which now serves an access to the municipal parking garage just west of the company property. The company shut down in 1909, transferring its electrical business to Boston Edison, which still operates an electrical substation in a nearby former company building. The other company buildings were converted to other manufacturing uses, and were demolished in 2007.The complex was listed on the National Register of Historic Places in 1989, and has not been delisted since its demolition.

The E. Sybbill Banks House is a historic house at 27 Appleton Street in Waltham, Massachusetts. Built in 1892, it is an excellent local example of vernacular Queen Anne styling. It was built for E. Sybbil Banks, the spinster daughter of Nathaniel Prentice Banks who was also a prominent local civil servant. The house was listed on the National Register of Historic Places in 1989.

The East Main Street Historic District is a small residential historic district in Waltham, Massachusetts. It encompasses part of an area that was, before the 1813 construction of the Boston Manufacturing Company further west, developing as a center of the community. Because of the company's economic influence, the center was more fully developed further west, and East Main Street became a fashionable area for upper class housing. The four houses on the south side of East Main Street between Townsend Street and Chamberlain Terrace are a well-preserved remnant of this later period. The district was listed on the National Register of Historic Places in 1989.The Lyman Reed House, at 436 Main Street, is the oldest of the four houses. Built in 1844, it is one of a few temple-front Greek Revival houses in the city. It has a full suite of high-style Greek Revival features, including pilastered corner boards, a full entablature, and full-length windows on the first floor of the main facade. The newest of the houses is the Charles P. Nutting House at 446 Main Street. Built c. 1900, it is a Colonial Revival structure with significant Queen Anne and Shingle style elements. Its gambrel roof sweeps down to the first floor, where it covers a veranda that extends across the front. The veranda has a fieldstone skirt and piers, with a round arch entry.The other two houses are both Italianate in style. The Francis Blanchard House, at 428 Main Street, was built c. 1850-54, and has Greek Revival features, including a pedimented gable end facing the street and corner pilasters, but it also has a typically Italianate round-arch window in the gable. The George W. Chamberlain House at 418 Main Street (built about the same time) is more strongly Italianate, with a projecting gable roof that has paired brackets and a crowning belvedere. Greek Revival elements include flushboard siding and corner pilasters.

New Covenant Church of Cambridge is located in Waltham, Massachusetts. It is a Haitian church and is headed by the Reverend Esther and the Reverend Thomas St. Louis.