Richard C. Lee United States Courthouse

The New Haven City Hall and County Courthouse is located at 161 Church Street in the Downtown section of New Haven, Connecticut. The city hall building, designed by Henry Austin, was built in 1861; the old courthouse building, now an annex, designed by David R. Brown, was built in 1871–73. They stand on the east side of the New Haven Green. The pair of buildings was listed on the U.S. National Register of Historic Places in 1975. They are significant early examples of High Victorian Gothic architecture in the United States. The city hall building's most striking feature used to be a clock tower that rose above. It is shown in historic drawing among the accompanying photographs. In 1992, a memorial to those involved in the Amistad incident, the Amistad memorial, was erected in front of city hall, facing the New Haven Green, as this was the site of the prison where the Africans aboard the Amistad were held and tried. In January 2012, a PureCell Model 400 was dropped into place behind City Hall in the Millennium Plaza. The heat produced by the fuel cell will be used to heat and cool City Hall and the Hall of Records. It will supply 60 percent of the buildings' heating needs, and 30 percent of cooling needs. According to Giovanni Zinn of the city's Office of Sustainability, the PureCell can help the city save up to $1 million in energy costs over the next ten years.

The Chapel Square Mall was a shopping mall in downtown New Haven, Connecticut. It was one of the first fully enclosed air-conditioned downtown malls in the United States; it has now been converted into apartments.

The Institute Library (Originally established as the New Haven Young Men's Institute, and sometimes called the Young Men's Institute Library) is a membership library in New Haven, Connecticut. Founded in 1826 in the tradition of Mechanics' Institutes, it is New Haven's oldest community library and one of the few membership libraries now remaining in North America. The organization was active during the 19th century as a center for lectures, debates, and classes in New Haven.

The Connecticut Financial Center is the tallest building in New Haven, Connecticut, and the sixth tallest building in the state. The 383 foot postmodern skyscraper was designed by the Toronto architectural firm Crang and Boake and completed in 1990. It is adjacent to New Haven City Hall facing the New Haven Green in Downtown New Haven. Among the current tenants of the building are United Illuminating, Bank of America, Merrill Lynch, the U.S. Attorney’s Office, U.S. Bankruptcy Court, and the Social Security Administration’s Office of Hearings and Appeals. The CFC stands on the former site of the Powell Building, which was New Haven's first skyscraper.

The Kennedy Mitchell Hall of Records is located in New Haven, Connecticut and houses many of the City of New Haven's governmental functions, including finance, vital statistics, offices of the town clerk, and public hearing rooms where city policy is debated.

The International Festival of Arts & Ideas is a 15-day festival that takes place in New Haven, Connecticut. The festival presents performing arts, lectures, and conversations that celebrate influential artists and thinkers from around the world. The Festival's free headliner concerts on the New Haven Green attracts thousands of spectators.

The Ninth Square Historic District encompasses a historically diverse and well-preserved part of the commercial area of Downtown New Haven, Connecticut. The district is bounded by Church, Court, State, and Crown Streets, and is centered on the intersection of Chapel and Orange Streets. The buildings in the district are mostly late-19th and early 20th commercial buildings, and includes a number of commercial buildings from the first half of the 19th century, a rarity in most of Connecticut's urban downtown areas. The district was listed on the National Register of Historic Places in 1984. Ninth Square takes its name from an early division of New Haven, when leaders of the New Haven Colony created a town plan of nine large squares in 1637, centered on the one now housing the New Haven Green. Because the ninth square was located closest to the colony's harbor, it was the first to develop a significant commercial presence. In the 1820s, the Farmington Canal was routed near the district, spurring further commercial development. The conversion of the canal right-of-way to railroad use intensified the area's commercial development in the second half of the 19th century. All of this resulted in a significant diversity of styles in the commercial buildings seen, generally reflecting architectural styles popular at the time of their construction. The area declined after World War II, but has been spared from destruction in urban renewal activities of the mid-20th century.The Ninth Square has been at the center of New Haven's cultural renaissance, densification and renewal over the last decade.

Downtown New Haven is the neighborhood located in the heart of the city of New Haven, Connecticut. It is made up of the original nine squares laid out in 1638 to form New Haven, including the New Haven Green, and the immediate surrounding central business district, as well as a significant portion of the Yale University campus. The area includes many restaurants, cafes, theaters and stores. Downtown is bordered by Wooster Square to the east, Long Wharf to the southeast, the Hill neighborhood to the south, the Dwight neighborhood to the west, the Dixwell neighborhood to the northwest, the Prospect Hill area to the north, and East Rock to the northeast. Downtown New Haven is one of the most residential downtown areas in the United States, with nearly 7,000 inhabitants. The expansion of housing options in recent years has helped support downtown businesses and has brought about a surge in economic activity. Secondary streets and areas at the periphery of the neighborhood that once contained vacant storefronts are now almost entirely leased to restaurants and retailers, and the office vacancy rate has dramatically fallen as well.

The Elizabeth R. Hooker House is a historic house at 123 Edgehill Road in New Haven, Connecticut. It is a 2+1⁄2-story brick English-style Arts and Crafts suburban villa designed by Delano and Aldrich and built in 1914 for Elizabeth R. Hooker (1874-1965). Hooker was a 20th-century progressive activist, scholar, and writer in areas such as women's rights, public health care, and historic preservation. The house was added to the National Register of Historic Places in 2010.

The Imperial Granum-Joseph Parker Buildings, also known historically as the Del Monico Building, are a pair of conjoined historic commercial buildings at Elm and Orange Streets in downtown New Haven, Connecticut. Built in 1875 and 1877, the two buildings are among the finest examples of the architecture of that period in the city, with one sporting one of the city's only surviving cast iron facades. The buildings were listed on the National Register of Historic Places in 1986.

The New Haven Free Public Library (also known as the NHFPL) is the public library system serving New Haven, Connecticut. The system began in 1887 in a leased location but quickly outgrew its space. The Ives Memorial Library is the main branch of the system and is located on the New Haven Green. The neo-Georgian building was designed by Cass Gilbert and finished in 1911. This building was renovated and expanded in 1990.Murals in the main library originated as Public Works Administration projects. Two lunettes in the main hall, designed by Bancel LaFarge of Mt. Carmel, Connecticut, depict scenes from New Haven's history. The Rip Van Winkle murals in the meeting room were painted in 1934 by a team of artists led by Salvatore DiNaio and Frank J. Rutkowski. There is also a set of stained glass windows in the Ives Library designed by David Wilson of South New Berlin, New York including circular and rectangular laylights as well as rectangular and half-round windows.There are also neighborhood branches in Westville (Mitchell), Fair Haven, Dixwell (Stetson) and The Hill (Wilson). The Wilson branch features an art installation by Leila Daw depicting patterns of immigration.In April 2012, the library underwent a significant rebranding effort in celebration of its 125th anniversary. In addition to updates in design and significant changes in borrowing policies, the library also adopted a retitled NHFPL125+ classification.

The former Union and New Haven Trust Building, located at 205 Church Street in New Haven, Connecticut, was the tallest building in New Haven when it was constructed in 1927. This Georgian-Colonial Revival skyscraper was designed by architects Cross and Cross. The building, sited on the northeast corner of the historic New Haven Green, changed hands several times over the years. In 2014 it was converted into residences and renamed The Union.