Lincoln Building (Union Square, Manhattan)

The New York Workers School, colloquially known as "Workers School", was an ideological training center of the Communist Party USA (CPUSA) established in New York City for adult education in October 1923. For more than two decades the facility played an important role in the teaching of party doctrine to the organization's functionaries, as well as offering a more general educational program to trade union activists. The Workers School was a model for local CPUSA training centers in the area (e.g., the Jewish Workers University, founded in New York City in 1926) and in other American cities (e.g., the Chicago Workers School). It also provided the direct inspiration for the New Workers School, established by the breakaway Communist Party (Majority Group) headed by Jay Lovestone and Benjamin Gitlow (supported by Bertram D. Wolfe and Ben Davidson) after they left the Communist Party in 1929. The Workers School was dissolved through merger in 1944, becoming part of the CPUSA's Jefferson School of Social Science.

The Clinton School is a New York City public middle and high school located in the Chelsea section of Manhattan, New York. It serves a student body of about 400 students between the 6th and 12th grades. The Clinton School is authorized by the International Baccalaureate Organization to offer the IB Diploma Programme. As per the U.S. News 2018 High School Ranking, the Clinton School is one of the top high schools in the nation,. Applicants must succeed in an admission test, and satisfy other requirements according to the grade entered. For over twenty years Clinton was located on the top floor of the elementary school PS 11 but has now relocated to a new building near Union Square. As of the 2017-18 school year, the high school had an enrollment of 488 students and 34 classroom teachers (on an FTE basis), for a student–teacher ratio of 14.4:1. There were 51 students (12% of enrollment) eligible for free lunch or reduced-cost lunch.

The Spingler Building (also Springler Building or 5 Union Square West) is an eight-story Romanesque building at 5–9 Union Square West, between 14th and 15th Streets, in the Union Square neighborhood of Manhattan, New York City. Built in 1897 by William H. Hume & Son, it replaced a five-story building of the same name, which burned down in 1892. The Spingler Building occupies an L-shaped lot wrapping around 15 Union Square West to the north, and is also adjacent to the Lincoln Building to the south.

15 Union Square West is a residential building on East 15th Street overlooking Union Square in Manhattan, New York City. Originally Tiffany & Company’s 19th-century headquarters, it was refurbished and reopened in 2008 as high-end apartments. Commissioned by Charles Lewis Tiffany in 1869, John Kellum designed the original structure, which included 16-foot cast-iron arches that rose above the park. The building cost $500,000 and opened in 1870. At the time, the store was described as “the largest of its kind devoted to this business of any in the world,” and dubbed the “palace of jewels”. Tiffany & Co. stayed there until 1906. By 1925 the building was occupied by the Amalgamated Clothing Workers of America trade union. By 1952 it was owned by Amalgamated Bank. After a fatal accident where a pedestrian was struck by a falling piece of cast iron, they stripped the original façade and covered it with white brick. The building then stood unchanged for more than 50 years.Brack Capital Real Estate purchased the property in 2006, and restored the original six-story structure and added six newly constructed floors to create a boutique condominium with 36 residences. The brick façade was dismantled and the original arches were reconditioned and wrapped behind a façade of glass and black anodized aluminum. The original structure was topped by an additional six stories of all glass residences. Designed by Eran Chen of ODA-Architecture, previously of Perkins Eastman, the building blends historic and contemporary elements.In 2011, two of the two-bedroom apartments were purchased by tennis player Caroline Wozniacki for $9 million. Earlier that year, the retail portion of the development was purchased by the State Teachers Retirement System of Ohio (STRS) for $57.88 million.

14th Street is a major crosstown street in the New York City borough of Manhattan, traveling between Eleventh Avenue on Manhattan's West Side and Avenue C on Manhattan's East Side. It forms a boundary between several neighborhoods and is sometimes considered the border between Lower Manhattan and Midtown Manhattan. At Broadway, 14th Street forms the southern boundary of Union Square. It is also considered the northern boundary of Greenwich Village, Alphabet City, and the East Village, and the southern boundary of Chelsea, Flatiron/Lower Midtown, and Gramercy. West of Third Avenue, 14th Street marks the southern terminus of western Manhattan's grid system. North of 14th Street, the streets make up a near-perfect grid that runs in numerical order. South of 14th, the grid continues in the East Village almost perfectly, but not so in Greenwich Village, where an older and less uniform grid plan applies. In the early history of New York City, 14th Street was an upscale location. However, it lost its glamour and status as the city grew northward and today it is primarily zoned as a commercial street. In October 2019, a busway restriction was put in place between Third and Ninth Avenues, prohibiting most types of vehicles during the daytime.

A statue of Mahatma Gandhi by Kantilal B. Patel stands in Union Square in Manhattan, New York, United States.

On August 4, 2023, at approximately 3:30 p.m. EDT, internet personality Kai Cenat held a purported giveaway of gaming-related items in Union Square, Manhattan, while not having a permit for the gathering. The event, which drew thousands of participants to Union Square Park, became a riot. Social media posts of the event surfaced around the same time. Cenat was taken into police custody by the New York City Police Department (NYPD) during the riot and was charged with inciting a riot and unlawful assembly. He appeared in court on August 16 and August 18. His business partners at Any Means Possible apologized for the riot. Cenat would also apologize in a livestream on August 9. The incident led to discussion and debate about the influence of internet personalities.

15 East (also known as 15 East at Tocqueville) is a Japanese restaurant at 1 East 15th Street in Union Square, Manhattan, New York City. The restaurant has received a Michelin star, but lost it in 2016.

Union Square Drinking Fountain, also known as James Fountain, is an outdoor bronze sculpture and ornamental fountain by sculptor Adolf von Donndorf and architect J. Leonard Corning, located on the west side of Union Square Park in Manhattan, New York City. Cast in 1881 and dedicated on October 25, 1881, it was donated by Daniel Willis James "to promote public health as well as the virtue of charity". The statuary group includes a standing woman holding a baby in her right arm and a young child at her left side. They are set on an octagonal Swedish red granite pedestal with lion head fountains and basins on four of the sides.

George Washington is an outdoor sculpture by Henry Kirke Brown (1814–1886), located in Union Square, Manhattan, in the United States. The bronze equestrian statue was dedicated in 1856 and is the oldest sculpture in the New York City Parks collection.

The University Center ("UC") is a major building that is part of The New School in New York, NY.

The Coffee Shop was a restaurant and bar located next to Union Square, New York City. Before The Coffee Shop opened, the building was home to a coffee shop and cafe called Chase. The owners of Chase had placed a large neon sign outside the building reading "Coffee Shop" and the new tenant took its name from the sign and left it attached to the building. The restaurant was known for being popular with celebrities and members of New York's fashion scene.In mid-2018, the restaurant's owners announced it would close in October 2018. It is one of several restaurants on Union Square that have closed due to rising rents.