Marlborough Brook Filter Beds

The Dennison Manufacturing Co. Paper Box Factory is a historic factory building at 175 Maple Street in Marlborough, Massachusetts. It was built in 1923 and owned by the paper company until 1969. After Dennison left, a subsidiary of Dennison, Design Pak, was based in the building. In 2007, the building was converted into apartments. The building was added to the National Register of Historic Places in 2008.Dennison, founded by brothers Aaron and Eliphalet W. Dennison as an adjunct to their father's jewelry business, was originally a jewelry-box making company run out of the family home in Brunswick, Maine, in the 1840s.

The J.D.C. Bradley House, also known as Oakcrest, is a historic mansion at 5 Sadie Hutt Lane in Southborough, Massachusetts. Built in 1913, the massive, 15,000-square-foot (1,400 m2) stucco house is one of the finest surviving works of architect Charles Adams Platt in Massachusetts. The house was listed on the National Register of Historic Places in 1999, where it is listed at 60 Sears Road.

Spring Hill Cemetery is a historic cemetery at High and Brown Streets in Marlborough, Massachusetts. Established in 1675, it is the city's oldest cemetery. It has about 650 known burials, dating from its establishment to 1977. It is located on a 2.62-acre (1.06 ha) parcel on a hill just east of the downtown area, and is accessed via a single entrance marked by granite posts at High and Brown Streets. Burials are laid out generally in rows, with headstones facing west. There are four earth-covered tombs near the entrance dating to the first half of the 19th century. Another prominent burial is that of Marlborough's first minister, William Brimsmead (d. 1701).The cemetery was added to the National Register of Historic Places in 2004.

The John Cotting House is a historic house at 74 Main Street in Marlborough, Massachusetts.

The John Brown Bell, in Marlborough, Massachusetts, is a distinguished American Civil War-era bell that has been called the "second-most important bell in American history", after the Liberty Bell.

St. Mark's School is a coeducational, Episcopal preparatory school, situated on 250 acres (100 ha) in Southborough, Massachusetts, 25 miles (40 km) from Boston. St. Mark's was founded in 1865 as an all-boys school by Joseph Burnett, who developed and marketed Burnett Vanilla Extract. Girls have attended since 1978. St. Mark's is a member of the Independent School League and one of five prep schools known collectively as St. Grottlesex.

The Temple Building is a historic commercial and residential building at 149 Main Street in Marlborough, Massachusetts. The four story red brick building was built in 1879–80, and originally housed shops on the ground floor and a hotel on the upper floors. It still has shop space on the ground floor, but the upper levels have been converted to apartments. The building has Second Empire styling, with a mansard roof that is punctured at the center of the main facade by a two-bay arched projecting with decorative brickwork.The building was listed on the National Register of Historic Places in 1983.

The Warren Block is a historic commercial block at 155 Main Street in Marlborough, Massachusetts. The four-story brick building was built in 1891 for Winslow Warren, owner of the local railway express. The building was designed to house office spaces on most of the first and second floors, and facilities of the local YMCA, including a gymnasium and reading room. The building's facade features a distinctive basket-weave style of brickwork.The building was listed on the National Register of Historic Places in 1983, and included in the Marlborough Center Historic District in 1998.

The Marlborough Center Historic District is a historic district encompassing the civic and commercial heart of Marlborough, Massachusetts. It is centered on a stretch of Main Street between Lincoln Street in the west and Bolton Street (Massachusetts Route 85) in the east, and includes properties on adjacent streets. The center is reflective of the city's prosperity as an industrial center from the mid-19th century to the mid-20th century. The district was listed on the National Register of Historic Places in 1998.

Marlborough City Hall is the seat of city government of Marlborough, Massachusetts. It includes the offices of the mayor of Marlborough and the Marlborough City Council. The current city hall building was built in 1905 by architects Allen, Collens and Berry and is an example of Beaux-Arts architecture. It replaced an earlier building that burned down in 1902. The building is part of the Marlborough Center Historic District.

Marlborough is a city in Middlesex County, Massachusetts, United States. The population was 41,793 at the 2020 census. Marlborough became a prosperous industrial town in the 19th century and made the transition to high technology industry in the late 20th century after the construction of the Massachusetts Turnpike. Marlborough was declared a town in 1660. It was incorporated as a city in 1890 when it changed its municipal charter from a New England town meeting system to a mayor–council government.

Rocklawn Cemetery is a historic cemetery on Stevens Street in Marlborough, Massachusetts. Established in 1813 as Chipman Cemetery, it was Marlborough's fifth cemetery. The Rocklawn section of the cemetery was added in 1855, giving the cemetery its present name. This section was laid out in the then-fashionable rural cemetery style, in contrast to the older section, which is laid out in a grid. The cemetery served as a major burying ground for the city from the mid-19th century into the 20th century.The cemetery was listed on the National Register of Historic Places in 2004.