Octagon House (Stamford, Connecticut)

Sacred Heart Academy was a regional, female-only Catholic school for grades 9–12, founded in 1922 under the Roman Catholic Diocese of Bridgeport. It was located at 200 Strawberry Hill Avenue in Stamford, Connecticut and served parts of Fairfield County, Connecticut and Westchester County, New York. It closed in 2006 due to "declining enrollment and financial difficulties."

The First Presbyterian Church of Stamford is a church in Stamford, Connecticut designed by architect Wallace K. Harrison. Nicknamed the Fish Church for its unusual shape, it is a unique example of modernist architecture, and an architectural landmark. Its 260-foot-tall (79 m) Maguire Memorial Tower holds a 56-bell carillon. The building was designated a National Historic Landmark for its architecture in 2021.

The C. J. Starr Barn and Carriage House is an historic estate outbuilding, located on the grounds of the former Sacred Heart Academy on Strawberry Hill Road in Stamford, Connecticut. It is a large 1+1⁄2-story wood-frame structure with elegant Italianate scrolled woodwork on the exterior, with a smaller barn joined to a larger building that originally functioned as a carriage house. They were built c. 1860 by C. J. Starr has part of a larger country estate, of which these are the only surviving buildings. The estate was given to the Sacred Heart Academy, which has done sensitive restoration of the exterior of the structure; its interior has been converted into a gymnasium and other facilities.The building was listed on the National Register of Historic Places on September 14, 1979.

Stamford High School is a high school, founded in 1873, in Stamford, Connecticut. It is one of three public high schools in the Stamford Public Schools district, along with Westhill High School and AITE (Academy of Information Technology & Engineering).

The Hoyt-Barnum House at 1508 High Ridge Road in Stamford, Connecticut, is a Cape Cod cottage style house that was built around 1699, and is the oldest extant house in the city of Stamford. The builder was a descendant of one of the original founders of Stamford. The large central chimney stack is made of field stone, laid up with only clay, animal hair, and straw. The house is braced timber frame construction or post and beam. The foundation is of field stone. The west room of the house is plastered. The east room has an exposed whitewashed frame, the hearth room walls are sheathed with wood paneling, showing the various interior finishing techniques incorporated into the house during its evolution.The house is now owned and maintained as a museum by the Stamford History Center (formerly known as Stamford Historical Society). It was listed on the National Register of Historic Places in 1969. In 2017, it was moved from its original location at 713 Bedford Street to its new location next to the Stamford History Center where it is open for tours. Following the move it is the first structure permitted to remain on the National Register of Historic Places after being dismantled, relocated, and restored.

St. Bridget of Ireland Parish is a Roman Catholic congregation in Stamford, Connecticut, part of the Diocese of Bridgeport.

The Unitarian Universalist Church is a historic church at 20 Forest Street in Stamford, Connecticut. It is a modestly-sized Gothic Revival structure, built out of fieldstone, brick, and granite, in 1870 to a design by Stamford architect Gage Inslee. While most of its exterior windows are stenciled in imitation of stained glass, it has two genuine stained glass windows in the choir loft that are between 400 and 700 years old, and were brought over parishioner Thomas Crane. The church rectory, built 1880, is a handsome Victorian Gothic structure with early elements of Queen Anne styling.The church complex was listed on the National Register of Historic Places in 1987.

The Revonah Manor Historic District is a 23.1-acre (9.3 ha) predominantly residential historic district in Stamford, Connecticut that was listed on the National Register of Historic Places in 1986. The district encompasses what was one of Stamford's first planned residential developments, developed by Herman Henneberg and his son-in-law Henry Jevne, with many houses designed by Lawrence Barnard. The result was a remarkable concentration of fairly uniformly-designed Colonial Revival and Tudor Revival houses in a three-block area. Most of the houses are on Urban, Chester, and Fifth Streets, between Revonah Avenue and Bedford Street.

St. Vladimir's Cathedral is a Ukrainian Catholic cathedral located in Stamford, Connecticut. It is the seat for the Eparchy of Stamford. The parish was established in 1916, and the simple brick Romanesque Revival-inspired church building was completed in 1957.

The Ukrainian Catholic Eparchy of Stamford is a Ukrainian Greek Catholic Church ecclesiastical territory or eparchy of the Catholic Church in New York State and New England in the United States. The episcopal see is Stamford, Connecticut, where the cathedra is found in St. Volodymyr Cathedral. The diocese publishes The Sower, a monthly newsletter with articles written in both English and Ukrainian, from its offices in Stamford. The Eparchy of Stamford is a suffragan eparchy in the ecclesiastical province of the metropolitan Archeparchy of Philadelphia.

The Zion Lutheran Church is a historic Lutheran church building at 132 Glenbrook Road in Stamford, Connecticut. The red brick Gothic Revival structure was built in 1925 by a German immigrant congregation founded in 1897. It is the city's only red brick church. The main facade is dominated by a square tower on the right, which rises only to the height of the roof gable on the left. The gable stands above a large quadruple window set in a slightly pointed arch, which stands above the main entrance, which is recessed in an arched opening.The property was added to the National Register of Historic Places in 1987.

Congregation Agudath Sholom (CAS) is a historic Jewish synagogue in Stamford, Connecticut. The original synagogue building was later converted into a Christian church building, the Faith Tabernacle Missionary Baptist Church. It's one of multiple synagogues considered in a study of NRHP eligibility.