Richard O'Brien Three-Decker

The Fay Street Historic District a small residential historic district encompassing two related triple decker houses in Worcester, Massachusetts. Built about 1896, they were noted for the preservation of their Queen Anne styling, which has since been removed. They were listed on the National Register of Historic Places in 1990.

The Grafton Street School is a historic school at 311 Grafton Street in Worcester, Massachusetts. The school consists of two buildings, built in 1879 and 1899, that feature high-quality Late Victorian architecture. The buildings were listed on the National Register of Historic Places in 1980.

The Arthur Provost Three-Decker is a historic triple decker house in Worcester, Massachusetts. Built c. 1910, it is a locally rare instance of the form built in brick. It was also originally noted for its fine Queen Anne porches, which have been removed. The building was listed on the National Register of Historic Places in 1990.

The Norcross Factory is a historic building at 10 E. Worcester Street in Worcester, Massachusetts. Built in stages beginning 1863, this structure includes one of the city's oldest school buildings, the East Worcester Grammar School, and represents an adaptive reuse of the building, serving from 1893 to 1918 as the main facility of the Norcross Brothers, a firm best known for its construction of H. H. Richardson designs. The building was listed on the National Register of Historic Places in 1980.

The Arad Alexander House is a historic house at 53 Waverly Street in Worcester, Massachusetts. Built about 1845 and moved in the 1860s, it is one of the city's most elaborate Greek Revival residences, and may have been designed by prominent local architect Elias Carter. It was listed on the National Register of Historic Places on March 5, 1980.

The Houghton Street Historic District is a historic district in Worcester, Massachusetts. It consists of seven triple-decker residences (six on the odd-numbered side of Houghton Street and one on Dorchester Street) and three period garages, all built between 1920 and 1926. The buildings represent a well-preserved and cohesive collection of Colonial Revival residences. The district was listed on the National Register of Historic Places in 1990. Some of the buildings have lost historic integrity since the listing.

The Dartmouth Street School is a historic school building at 13 Dartmouth Street in Worcester, Massachusetts. Built in 1894 to a design by noted local architect George Clemence, it is a well-preserved architectural mix of Romanesque and other Late Victorian styles. The building was listed on the National Register of Historic Places in 1980. In 2008 a proposal was floated to convert the building into housing; as of 2012, it stood vacant.

The Boulevard Diner is a historic diner at 155 Shrewsbury Street in Worcester, Massachusetts. It was built by Worcester Lunch Car Company in 1936 as #730. It is a well-preserved instance of a barrel-roof diner that the company made in significant numbers in the years before the Second World War, and the city's best-preserved 1930s diner. It was listed on the National Register of Historic Places in 2000.

Worcester Academy is a private school in Worcester, Massachusetts. It is the oldest educational institution founded in the city of Worcester, Massachusetts, and one of the oldest day-boarding schools in the United States. A coeducational preparatory school, it belongs to the National Association of Independent Schools. Situated on 73 acres (30 hectares), the academy is divided into a middle school (serving approximately 70 students in grades six to eight), an upper school, serving approximately 440 students in grades nine to twelve, including some postgraduates. Approximately one-third of students in the upper school participate in the school's five- and seven-day boarding programs. Currently, there are approximately 67 international students enrolled from 12 different nations. The academy is mildly selective, accepting approximately 65% of all applicants. Worcester Academy is a member of the Council for Advancement and Support of Education, the Association of Independent Schools in New England, and the New England Preparatory School Athletic Council. The Academy's motto is the Greek phrase "Έφικνού τών Καλών," which means "Achieve the Honorable."

The Osgood Bradley Building is an historic industrial building at 18 Grafton Street in Worcester, Massachusetts. Completed in 1916, the eight-story brick building is notable for its association with the Osgood Bradley Car Company, an early manufacturer of both railroad cars and automobiles. The building was listed on the National Register of Historic Places in 2018.

Shaarai Torah Synagogue (Hebrew: שַׁעֲרֵי תּוֹרָה, "Gates of Learning") is an historic former synagogue building at 32 Providence Street in Worcester, Massachusetts. Worcester's first Modern Orthodox "shul" (and 6th overall), Shaarai Torah was considered the city's "Mother Synagogue" for many years.

The Edna Stoliker Three-Decker is a historic triple decker in Worcester, Massachusetts. Built c. 1916, it is a well-preserved local example of Colonial Revival styling. It was listed on the National Register of Historic Places in 1990.