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St. Albans School (STA) is an independent college preparatory day and boarding school for boys in grades 4–12, located in Washington, D.C. The school is named after Saint Alban, traditionally regarded as the first British martyr. Within the St. Albans community, the school is commonly referred to as "S-T-A." It enrolls approximately 590 day students in grades 4-12, and 30 additional boarding students in grades 9-12, and is affiliated with the National Cathedral School and the co-ed Beauvoir, the National Cathedral Elementary School, all of which are located on the grounds of the Washington National Cathedral. St. Albans, along with the affiliated schools and the Washington National Cathedral, are members of the Protestant Episcopal Cathedral Foundation. It is regarded among the most prestigious secondary schools in the United States. The school mascot is the bulldog, a symbol adopted under the school’s fourth headmaster, Canon Charles S. Martin, because of Martin’s fondness for his pet bulldogs. The St. Albans motto, "Pro Ecclesia et Pro Patria," translates to "For Church and Country." St. Albans requires all students to attend Chapel twice a week in The Little Sanctuary. The school seeks to develop in its students a sense of moral responsibility through Chapel, its Honor Code, and a co-curricular social service program. A 2004 article in The Wall Street Journal found that among U.S. schools, St. Albans had the 11th-highest success rate in placing graduates at 10 selective universities. A 2015 article in Business Insider named St. Albans the smartest boarding school in the United States on the basis of average SAT scores.Approximately 80% of the faculty at the school have advanced degrees. The school also maintains one writer-in-residence, who teaches English classes while developing his or her work. (A past writer-in-residence is Curtis Sittenfeld, who worked on her best-selling novel Prep while at St. Albans).

St. Alban's Parish is an Episcopal Church in Washington, D.C. and is a member of the Episcopal Diocese of Washington. It was founded by Phoebe Pemberton Morris Nourse, who bequeathed $35 to establish the church.

George Washington on Horseback is an equestrian statue by sculptor Herbert Haseltine. It is located south of the Washington National Cathedral. It was dedicated on February 22, 1959.

Saint Sophia Greek Orthodox Cathedral was founded as a church in 1904 to serve the Greek Orthodox residents of the District of Columbia. In 1962, the church was elevated to a cathedral under the jurisdiction of the Archbishop of America in New York City and serves as his cathedral in Washington. The church is not named for Saint Sophia the martyr, but rather the Holy Wisdom of God in the tradition of Hagia Sophia of Constantinople. The building is in the Neo-Byzantine style with a central dome that reaches 80 ft (24 m) in height. The congregation met in temporary quarters for several years, prior to the construction of its own church near 8th and L Streets NW which was dedicated in 1924. This site is currently occupied by the Walter E. Washington Convention Center. Construction on the current edifice at 2815 36th Street NW, near Massachusetts Avenue and a short distance from the Washington National Cathedral, began in 1951. The congregation began worshipping there in 1955 shortly after major construction was completed. Although the building has been in use for over fifty years, the interior decoration is incomplete. Work began on the interior in 1965 and continues to the present. The cathedral was Consecrated in May 2015 by Archbishop Demetrios of America. In 2003, construction began on an education center to the east of the sanctuary. It opened September 16, 2004, and contains classrooms, a library and ballroom to house gatherings. On May 10, the Cathedral was consecrated in a service presided over by Archbishop Demetrios of America, Primate of the Greek Orthodox Church in America; Bishop Andonios of Phasiane, Chancellor of the Greek Orthodox Archdiocese of America; the Reverend Steven Zorzos, Presiding Priest of Saint Sophia Cathedral; the Reverend Dimitrios Lee, Assistant Priest of Saint Sophia Cathedral; the Reverend John Tavlarides, Presiding Priest Emeritus of Saint Sophia Cathedral; and Archdeacon Panteleimon Papadopoulos. As part of the service, the relics of three saints were interred in the altar table—those of Saint Panteleimon, Saint Barbara and Saint Kyrikos (representing a male saint, a female saint and one of the few child saints).

The Cathedral Church of Saint Peter and Saint Paul in the City and Diocese of Washington, commonly known as Washington National Cathedral, is an American cathedral of the Episcopal Church. The cathedral is located in Washington, D.C., the capital of the United States. The structure is of Neo-Gothic design closely modeled on English Gothic style of the late fourteenth century. It is the second-largest church building in the United States, and the third-tallest building in Washington, D.C. The cathedral is the seat of both the Presiding Bishop of the Episcopal Church, Michael Bruce Curry, and the bishop of the Diocese of Washington, Mariann Edgar Budde. Over 270,000 people visit the structure annually.The Protestant Episcopal Cathedral Foundation, under the first seven Bishops of Washington, erected the cathedral under a charter passed by the United States Congress on January 6, 1893. Construction began on September 29, 1907, when the foundation stone was laid in the presence of President Theodore Roosevelt and a crowd of more than 20,000, and ended 83 years later when the "final finial" was placed in the presence of President George H. W. Bush in 1990. Decorative and restorative work, particularly of damage from the 2011 Virginia earthquake, is ongoing as of 2023. The Foundation is the legal entity of which all institutions on the Cathedral Close are a part; its corporate staff provides services for the institutions to help enable their missions, conducts work of the Foundation itself that is not done by the other entities, and serves as staff for the board of trustees. The cathedral stands at Massachusetts and Wisconsin Avenues in the northwest quadrant of Washington. It is an associate member of the recently organized inter-denominational Washington Theological Consortium. It is listed on the National Register of Historic Places. In 2007, it was ranked third on the List of America's Favorite Architecture by the American Institute of Architects.

The Episcopal Diocese of Washington is a diocese of the Episcopal Church covering Washington, D.C. and nearby counties of Maryland in the United States. With a membership of over 38,000, the diocese is led by the Bishop of Washington, Mariann Budde. It is home to Washington National Cathedral, which is the seat of both the diocesan bishop and the Presiding Bishop of the Episcopal Church.

Massachusetts Heights is a small neighborhood in Northwest Washington, DC, dominated by the grounds of the Washington National Cathedral. The neighborhood is bounded to the north by Woodley Road, to the southwest by Massachusetts Avenue, to the east by 34th Street NW, and to the west by Wisconsin Avenue. The only residential section of Massachusetts Heights is a small triangular wedge between Massachusetts Avenue and Garfield Street, just adjacent to Observatory Circle and the grounds of the Vice President's Residence. The remainder of the neighborhood is entirely occupied by the Cathedral and its affiliated properties, including St. Albans School, National Cathedral School, and the Beauvoir School.

National Cathedral School (NCS) is an independent Episcopal private day school for girls in grades 4–12 located on the grounds of the Washington National Cathedral in Washington, D.C., United States. Founded by philanthropist and suffragist Phoebe Apperson Hearst and Bishop Henry Yates Satterlee in 1900, NCS is the oldest of the institutions constituting the Protestant Episcopal Cathedral Foundation.

Alban Towers is an apartment building on Massachusetts Avenue in Northwest Washington, D.C. It is listed in the National Register of Historic Places, and is considered to be one of the best examples of Gothic Revival architecture in Washington.It is located at the intersection of Massachusetts Avenue (Embassy Row) and Wisconsin Avenue, and occupies the 221,000 square foot (21,000 m²) block between those two avenues and Garfield Street, Cathedral Avenue, and 38th Street. Diagonally across the Massachusetts-Wisconsin intersection is the St. Albans School, which occupies the southwestern corner of the grounds of the Washington National Cathedral.

Temple Micah is a Reform Jewish synagogue in Washington, D.C.

The Beauvoir School is a coeducational primary school on the grounds of the Washington National Cathedral in Washington D.C., serving students from pre-kindergarten through 3rd grade. In 1933, it was founded to prepare boys for St. Albans School and girls for National Cathedral School, which serve grades 4-12. Like the Cathedral itself and the affiliated schools, Beauvoir is overseen by the Protestant Episcopal Cathedral Foundation.

The Embassy of Iraq in Washington, D.C. is the diplomatic mission of the Republic of Iraq to the United States. The embassy is located at 3421 Massachusetts Avenue, Northwest, in the Embassy Row neighborhood, near the United States Naval Observatory.